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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C.  20549
 FORM 10-K
 
ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 2023
OR
 
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from          to          
Commission file number 1-8993
WHITE MOUNTAINS INSURANCE GROUP, LTD.
(Exact name of Registrant as specified in its charter)
Bermuda 94-2708455
(State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.)
23 South Main Street, Suite 3B  
Hanover, 03755-2053
New Hampshire(Zip Code)
(Address of principal executive offices) 
Registrant’s telephone number, including area code: (603640-2200
 Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s) Name of each exchange on which registered
Common Shares, par value $1.00 per shareWTM New York Stock Exchange
WTM.BH Bermuda Stock Exchange
Securities registered pursuant to Section 12(g) of the Act: None
Indicate by check mark if the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ý No o
Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes o No ý
Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ý No o
 
Indicate by check mark whether the Registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the Registrant was required to submit such files). Yes  ý No o
Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
Large accelerated filerýAccelerated filer oNon-accelerated filer o
Smaller reporting company Emerging growth company 
If an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o
Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ý
If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. o
Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b). o
Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes  No ý
The aggregate market value of voting shares (based on the closing price of those shares listed on the New York Stock Exchange and the consideration received for those shares not listed on a national or regional exchange) held by non-affiliates of the Registrant as of June 30, 2023, was $3,443,635,676.
As of February 21, 2024, 2,555,183 common shares, par value of $1.00 per share, were outstanding (which includes 24,120 restricted common shares that were not vested at such date). 
DOCUMENTS INCORPORATED BY REFERENCE
Portions of the Registrant’s Definitive Proxy Statement to be filed with the Securities and Exchange Commission (“SEC”) pursuant to Regulation 14A under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), relating to the Registrant’s Annual General Meeting of Members scheduled to be held May 23, 2024 are incorporated by reference into Part III of this Form 10-K. With the exception of the portions of the Proxy Statement specifically incorporated herein by reference, the Proxy Statement is not deemed to be filed as part of this Form 10-K.



TABLE OF CONTENTS

 
 
Ark/WM Outrigger
 
 
 
 
Cybersecurity
 
 
 
 
 
 CERTIFICATIONSC-1




PART I

Item 1.  Business

GENERAL
 
White Mountains Insurance Group, Ltd. (the “Company” or the “Registrant”) is an exempted Bermuda limited liability company whose principal businesses are conducted through its subsidiaries and affiliates. Within this report, the term “White Mountains” is used to refer to one or more entities within the consolidated organization, as the context requires. The Company’s headquarters is located at 26 Reid Street, Hamilton, Bermuda HM 11, its principal executive office is located at 23 South Main Street, Suite 3B, Hanover, New Hampshire 03755-2053 and its registered office is located at Clarendon House, 2 Church Street, Hamilton, Bermuda HM 11. The Company’s website is located at www.whitemountains.com. The information contained on White Mountains’s website is not incorporated by reference into, and is not a part of, this report.
White Mountains is engaged in the business of making opportunistic and value-oriented acquisitions of businesses and assets in the insurance, financial services and related sectors, operating these businesses and assets through its subsidiaries and, if and when attractive exit valuations become available, disposing of these businesses and assets.
As of December 31, 2023, White Mountains conducted its business primarily in four areas: municipal bond insurance, property and casualty insurance and reinsurance, capital solutions for asset and wealth management firms and other operations. White Mountains’s municipal bond insurance business is conducted through its subsidiary HG Global Ltd. and its reinsurance subsidiary HG Re Ltd. (“HG Re”) (collectively, “HG Global”). HG Global was established to fund the startup of and provide reinsurance, through HG Re, to Build America Mutual Assurance Company (“BAM”), a mutual municipal bond insurance company (collectively, “HG Global/BAM”). White Mountains’s property and casualty insurance and reinsurance business is conducted through its subsidiary Ark Insurance Holdings Limited and its subsidiaries (collectively, “Ark”) and Outrigger Re Ltd. Segregated Account 2023-1 (“WM Outrigger Re”) (collectively with Ark, “Ark/WM Outrigger”). White Mountains provides capital solutions for asset and wealth management firms through its subsidiary Kudu Investment Management, LLC and its subsidiaries (collectively, “Kudu”).
White Mountains’s other operations consists of the Company and its wholly-owned subsidiary, White Mountains Capital, LLC (“WM Capital”), its other intermediate holding companies, its wholly-owned investment management subsidiary, White Mountains Advisors LLC (“WM Advisors”), investment assets managed by WM Advisors, its interests in MediaAlpha, Inc. (“MediaAlpha”), PassportCard Limited (“PassportCard”) and DavidShield Life Insurance Agency (2000) Ltd. (“DavidShield”) (collectively, “PassportCard/DavidShield”), Elementum Holdings LP (“Elementum”), certain other consolidated and unconsolidated entities and certain other assets (“Other Operations”). As of December 31, 2023, White Mountains’s reportable segments were HG Global/BAM, Ark/WM Outrigger and Kudu with its remaining operating businesses, holding companies and other assets included in Other Operations.
On October 25, 2023, White Mountains announced the launch of White Mountains Partners LLC (“WTM Partners”), which will acquire businesses in non-insurance, non-financial services sectors including essential services, light industrial and specialty consumer. White Mountains expects to deploy up to $500 million of equity capital through WTM Partners over time. WTM Partners is included within Other Operations.
On January 2, 2024, White Mountains acquired a controlling interest in Bamboo Ide8 Insurance Services LLC (“Bamboo MGA”) and its wholly-owned insurance subsidiary, Ide8 Limited (“Bamboo Captive”), through PM Holdings LLC (“Bamboo Holdings”) (collectively with Bamboo MGA and Bamboo Captive, “Bamboo”). Bamboo is a capital-light, tech- and data-enabled insurance distribution business providing homeowners’ insurance and related products to the residential property market in California. Bamboo operates primarily through Bamboo MGA, its full-service managing general agent (“MGA”) business. Bamboo will be consolidated and is expected to be presented as a reportable segment for periods after December 31, 2023. See “Bamboo Transaction” on page 18.

HG GLOBAL/BAM

Overview

The HG Global/BAM segment consists of the consolidated results of HG Global, HG Re and BAM. BAM is the first and only mutual municipal bond insurance company in the United States. By insuring the timely payment of principal and interest on municipal bonds, BAM provides market access to, and lowers interest expense for, issuers of municipal bonds used to finance essential public purpose projects. BAM is domiciled in New York and is owned by and operated for the benefit of its policyholders, the municipalities that purchase BAM’s insurance for their debt issuances. Generally accepted accounting principles in the United States (“GAAP”) require White Mountains to consolidate BAM’s results in its financial statements, which are attributed to noncontrolling interests. BAM reports on a statutory accounting basis to the New York State Department of Financial Services (“NYDFS”) and does not report stand-alone GAAP financial results.
1


HG Global was established to fund the startup of BAM and, through HG Re, to provide up to 15%-of-par, first loss reinsurance protection for policies underwritten by BAM. HG Global and HG Re are domiciled in Bermuda. At inception in 2012, HG Global was capitalized with $609 million. HG Global, together with its subsidiaries, funded the initial capitalization of BAM through the purchase of $503 million of surplus notes issued by BAM (the “BAM Surplus Notes”). See “CRITICAL ACCOUNTING ESTIMATES — Surplus Notes Valuation — BAM Surplus Notes” on page 78 for a discussion on the accounting and risks associated with the BAM Surplus Notes. BAM launched in 2012 after securing its “AA/stable” rating from Standard & Poor’s Financial Services LLC (“Standard & Poor’s”). In July 2023, Standard & Poor’s affirmed BAM’s “AA/stable” rating. “AA” is the third highest of 23 financial strength ratings assigned by Standard & Poor’s.
BAM charges an insurance premium on each municipal bond insurance policy it underwrites. A portion of the premium is a member’s surplus contribution (“MSC”) and the remainder is a risk premium. In the event of a municipal bond refunding, a portion of the MSC from original issuance can be reutilized, in effect serving as a credit against the total insurance premium on the refunding of the municipal bond. Issuers of debt insured by BAM are members of BAM so long as any of their BAM-insured debt is outstanding. As members, they have certain interests in BAM, including the right to vote for BAM’s directors and to receive dividends, if declared.
BAM focuses on municipal bonds issued to finance essential public purpose projects, such as schools, utilities and transportation facilities. BAM focuses on small-to-medium sized investment grade municipal bonds, primarily in the AA, A and BBB categories. BAM seeks to build a relatively low risk insurance portfolio with prudent single risk limits. White Mountains believes that municipal bonds insured by BAM have strong appeal to retail investors, who buy smaller, less liquid issues, have less portfolio diversification and have fewer credit differentiation skills and analytical resources than institutional investors.
BAM is exposed to climate-related events to the extent that those events impact a municipal issuer’s ability to service its debt obligations. BAM incorporates climate change risk in its credit underwriting process. In doing so, BAM considers both the short-term economic impact from climate change-related severe weather events (including flooding, wildfires, and drought) as well as longer-term impacts on population and property values from rising sea levels and changing temperature patterns.
As of December 31, 2023 and 2022, White Mountains reported $1,221 million and $1,125 million of total assets and $376 million and $364 million of total equity related to HG Global. As of December 31, 2023 and 2022, White Mountains owned 96.9% of HG Global’s preferred equity and 88.4% of its common equity. As of December 31, 2023 and 2022, White Mountains reported $1 million and $(1) million of noncontrolling interests related to HG Global.
As of December 31, 2023 and 2022, White Mountains reported $530 million and $507 million of total assets and $(140) million and $(155) million of noncontrolling interests related to BAM.

Reinsurance Treaties

FLRT
BAM is a party to a first loss reinsurance treaty (“FLRT”) with HG Re under which HG Re provides first loss protection up to 15%-of-par outstanding on each municipal bond insured by BAM. For capital appreciation bonds, par is adjusted to the estimated equivalent par value for current interest paying bonds. In return, BAM cedes approximately 60% of the risk premium charged for insuring the municipal bond, which is net of a ceding commission.
The FLRT is a perpetual agreement with terms that can be renegotiated after a specified period of time. During 2021, BAM and HG Re agreed that the terms may be renegotiated at the end of 2024, and each subsequent five-year period thereafter.
If the parties are unable to mutually agree to amended terms, the dispute is resolved through arbitration, according to certain principles agreed to by the parties. Amended contract terms must be approved by the NYDFS. Should BAM consider the amended terms unacceptable, it has the option to purchase HG Re or cause another reinsurer to purchase HG Re, at fair value.
Pursuant to the FLRT, BAM’s underwriting guidelines may only be amended with the consent of HG Re. In addition, HG Holdings Ltd, a subsidiary of HG Global, has the right to designate two directors for election to BAM’s board of directors.

Fidus Re
BAM is party to a collateralized excess of loss reinsurance agreement that serves to increase BAM’s claims paying resources and is provided by Fidus Re, Ltd. (“Fidus Re”), a Bermuda based special purpose insurer created in 2018 solely to provide reinsurance protection to BAM.
Fidus Re was initially capitalized in 2018 via the issuance of $100 million of insurance linked securities (the “Fidus Re 2018 Agreement”). The proceeds from issuance were placed in a collateral trust supporting Fidus Re’s obligations to BAM. The insurance linked securities were issued with an initial term of 12 years and are callable five years after the date of issuance. Under the Fidus Re 2018 Agreement, Fidus Re reinsures 90% of aggregate losses exceeding $165 million on a portion of BAM’s financial guarantee portfolio (the “2018 Covered Portfolio”) up to a total reimbursement of $100 million. The Fidus Re 2018 Agreement does not provide coverage for losses in excess of $276 million. The 2018 Covered Portfolio consists of approximately 23% of BAM’s gross par outstanding as of December 31, 2023.
2


In 2021, Fidus Re issued an additional $150 million of insurance linked securities (the “Fidus Re 2021 Agreement”), which have an initial term of 12 years and are callable five years after the date of issuance. The proceeds from issuance were placed in a collateral trust supporting Fidus Re’s obligations to BAM. Under the Fidus Re 2021 Agreement, Fidus Re reinsures 90% of aggregate losses exceeding $135 million on a portion of BAM’s financial guarantee portfolio (the “2021 Covered Portfolio”) up to a total reimbursement of $150 million. The Fidus Re 2021 Agreement does not provide coverage for losses in excess of $302 million. The 2021 Covered Portfolio consists of approximately 27% of BAM’s gross par outstanding as of December 31, 2023.
In 2022, Fidus Re issued an additional $150 million of insurance linked securities (the “Fidus Re 2022 Agreement”), which have an initial term of 12 years and are callable seven years after the date of issuance. The proceeds from issuance were placed in a collateral trust supporting Fidus Re’s obligations to BAM. Under the Fidus Re 2022 Agreement, Fidus Re reinsures 90% of aggregate losses exceeding $110 million on a portion of BAM’s financial guarantee portfolio (the “2022 Covered Portfolio”) up to a total reimbursement of $150 million. The Fidus Re 2022 Agreement does not provide coverage for losses in excess of $277 million. The 2022 Covered Portfolio consists of approximately 29% of BAM’s gross par outstanding as of December 31, 2023.

XOLT
In 2020, BAM entered into an excess of loss reinsurance agreement (the “XOLT”) with HG Re. Under the XOLT, HG Re provides last dollar protection for exposures on municipal bonds insured by BAM in excess of NYDFS single issuer limits. The XOLT is subject to an aggregate limit equal to the lesser of $125 million or the assets held in the Supplemental Trust at any point in time. Cessions under the XOLT are subject to approval by HG Re. As of December 31, 2023, BAM had ceded $465 million of exposure to HG Re under the XOLT.

Collateral Trusts

HG Re’s obligations under the FLRT are subject to an aggregate limit equal to the assets in two collateral trusts: a Regulation 114 Trust and a supplemental collateral trust (the “Supplemental Trust” and, together with the Regulation 114 Trust, the “Collateral Trusts”) at any point in time.
On a monthly basis, BAM deposits cash equal to ceded premiums, net of ceding commissions, due to HG Re under the FLRT directly into the Regulation 114 Trust. The Regulation 114 Trust target balance is equal to HG Re’s unearned premiums and unpaid loss and loss adjustment expense (“LAE”) reserves, if any. If, at the end of any quarter, the Regulation 114 Trust balance is below the target balance, funds will be withdrawn from the Supplemental Trust and deposited into the Regulation 114 Trust in an amount equal to the shortfall. If, at the end of any quarter, the Regulation 114 Trust balance is above 102% of the target balance, funds will be withdrawn from the Regulation 114 Trust and deposited into the Supplemental Trust. The Regulation 114 Trust balance as of December 31, 2023 and 2022 was $342 million and $289 million.
The Supplemental Trust target balance is $603 million, less the amount of cash and securities in the Regulation 114 Trust in excess of its target balance (the “Supplemental Trust Target Balance”). If, at the end of any quarter, the Supplemental Trust balance exceeds the Supplemental Trust Target Balance, such excess may be distributed to HG Re. The distribution will be made first as an assignment of accrued interest on the BAM Surplus Notes and second in cash and/or fixed income securities. As the BAM Surplus Notes are repaid over time, the BAM Surplus Notes will be replaced in the Supplemental Trust by cash and fixed income securities. The Supplemental Trust balance as of December 31, 2023 and 2022 was $607 million and $568 million, which included $247 million and $214 million of cash, investments and accrued investment income, $322 million and $340 million of BAM Surplus Notes and $38 million and $14 million of interest receivable on the BAM Surplus Notes.
If, at any point in time, the sum of the Regulation 114 Trust balance and the Supplemental Trust balance equals zero, BAM may choose to terminate the FLRT on a runoff basis. However, HG Re can elect to continue the FLRT by depositing into the Regulation 114 Trust assets with a fair market value not less than the greater of (i) $100 million or (ii) 10% of the then Regulation 114 Trust target balance.
As of December 31, 2023 and 2022, the Collateral Trusts held assets of $949 million and $857 million, which included $589 million and $503 million of cash, investments and accrued investment income, $322 million and $340 million of BAM Surplus Notes and $38 million and $14 million of interest receivable on the BAM Surplus Notes.
As of December 31, 2023 and 2022, total interest receivable on the BAM Surplus Notes was $175 million and $158 million, which includes amounts held outside the Collateral Trusts.


3


Competition/Pricing

The municipal bond insurance industry is highly competitive. BAM’s primary competitor is Assured Guaranty Ltd. (“Assured”).
BAM and Assured each seeks to differentiate itself through financial strength ratings, claims paying resources and underwriting strategies. BAM believes it has a number of distinct competitive advantages. BAM’s insured portfolio consists only of essential public purpose U.S. municipal bonds, and it has no exposure to mortgage and asset-backed securities, derivatives, non-U.S. structured or sovereign credits or territorial credits, such as Puerto Rico.  BAM believes that, over time, its mutual structure will deliver a cost of capital advantage relative to its stock company competitors.
BAM seeks to provide transparency with respect to its insured portfolio and each insured issuer. In order to allow issuers and investors in BAM-insured municipal bonds to monitor financial strength first-hand, BAM publishes credit profiles on every insured issuer. Credit profiles are accessible by CUSIP, obligor, state or sector on BAM’s website.
Pricing (i.e., premium level) is affected by a number of factors, including interest rate levels, credit spreads, trading value, and capture rate (i.e., the percentage of total interest savings captured in the form of insurance premium). All else being equal, pricing is generally higher when interest rates are higher, credit spreads are wider, BAM’s trading value is higher relative to competitors and the capture rate is higher.

Insured Portfolio

The following table presents BAM’s insured portfolio by asset class as of December 31, 2023 and 2022:
MillionsDecember 31, 2023December 31, 2022
SectorGross Par Outstanding
Weighted Average Standard & Poor’s Credit Rating (1)
Gross Par Outstanding
Weighted Average Standard & Poor’s Credit Rating (1)
General Obligation$60,471.7 A$55,955.0 A
Utility14,629.0 A13,583.3 A
Dedicated Tax12,040.2 A+10,755.0 A
General Fund8,842.1 A+8,218.7 A+
Higher Education7,444.8 A-6,947.5 A-
Enterprise Systems6,245.9 A4,537.4 A
Total insured portfolio$109,673.7 A$99,996.9 A
(1) The weighted average credit ratings are based on Standard & Poor’s credit ratings, or if unrated by Standard & Poor’s, the Standard & Poor’s equivalent of credit ratings provided by Moody’s Investor Service (“Moody’s”).

4


The following tables present BAM’s ten largest direct exposures based upon gross par outstanding as of December 31, 2023 and 2022:
December 31, 2023
$ in Millions
Gross Par Outstanding (2)
Percent of Total Gross Par Outstanding (2)
Standard & Poor’s Credit Rating (1)
Midway Airport, City of Chicago, IL (Cook County), Airport GARBs (2023
   Supplemental Indenture)
$513.5 0.5 %A
City of Chicago, IL (Cook County), Sales Tax - Local477.7 0.4 AA-
South Carolina Public Service Authority441.4 0.4 A-
Pennsylvania Turnpike Commission, PA, Toll Roads438.0 0.4 A+
Chicago Transit Authority, IL435.9 0.4 AA-
New Jersey Transportation Trust Fund Authority, System &
   Program Bonds, NJ, Gas Tax (2)
432.1 0.4 A-
Port Authority of NY and NJ418.5 0.4 AA-
Metropolitan Pier & Exposition Authority, IL (Cook County)395.5 0.4 A
State of Connecticut, CT (Lottery Revenue)380.9 0.3 AA-
Clark County SD, NV (Clark County)376.3 0.3 AA-
Total of top ten exposures$4,309.8 3.9 %
(1) “AA-” is the fourth highest, “A+” is the fifth highest, “A” is the sixth highest and “A-” is the seventh highest of 23 credit ratings assigned by Standard & Poor’s.
(2) For capital appreciation bonds, the amounts shown equal the estimated equivalent par value had the bonds been current interest paying bonds. 

December 31, 2022
$ in Millions
Gross Par Outstanding (2)
Percent of Total Gross Par Outstanding (2)
Standard & Poor’s Credit Rating (1)
Pennsylvania Turnpike Commission, PA, Toll Roads$441.3 0.4 %A
City of Chicago, IL (Cook County), Sales Tax - Local409.0 0.4 AA-
Clark County SD, NV (Clark County)383.1 0.4 A+
New Jersey Transportation Trust Fund Authority, System &
   Program Bonds, NJ, Gas Tax (2)
375.9 0.4 BBB+
State of Illinois369.8 0.4 BBB+
Miami-Dade County School Board (Miami-Dade County)366.8 0.4 AA-
Metropolitan Pier & Exposition Authority, IL (Cook County)366.3 0.4 A-
South Carolina Public Service Authority366.0 0.4 A-
Sacramento City USD, CA (Sacramento County)349.4 0.3 BBB
Metropolitan Transit Authority (MTA), NY, Mass Transit - Farebox (2)
346.9 0.3 BBB+
Total of top ten exposures$3,774.5 3.8 %
(1) “AA-” is the fourth highest, “A+” is the fifth highest, “A” is the sixth highest, “A-” is the seventh highest, “BBB+” is the eighth highest and “BBB” is the ninth highest of 23 credit ratings assigned by Standard & Poor’s.
(2) For capital appreciation bonds, the amounts shown equal the estimated equivalent par value had the bonds been current interest paying bonds. 

5


The following tables present the geographic distribution of BAM’s insured portfolio as of December 31, 2023 and 2022:
December 31, 2023
$ in MillionsNumber of RisksGross Par OutstandingPercent of Total Gross Par Outstanding
California862 $21,146.0 19.3 %
Texas1,057 16,338.6 14.9 
Pennsylvania543 10,946.1 10.0 
Illinois487 10,212.1 9.3 
New York417 5,606.3 5.1 
New Jersey210 4,478.7 4.1 
Florida92 3,515.0 3.2 
Alabama212 3,265.1 3.0 
Ohio191 3,110.3 2.8 
Michigan178 2,448.5 2.2 
Other States1,517 28,607.0 26.1 
   Total insured portfolio5,766 $109,673.7 100.0 %

December 31, 2022
$ in MillionsNumber of RisksGross Par OutstandingPercent of Total Gross Par Outstanding
California824 $20,055.5 20.1 %
Texas976 13,615.4 13.6 
Pennsylvania535 10,880.2 10.9 
Illinois467 9,065.9 9.1 
New York413 5,822.4 5.8 
New Jersey197 4,195.8 4.2 
Florida83 3,184.1 3.2 
Alabama206 3,172.7 3.2 
Ohio181 2,844.5 2.8 
Michigan163 2,342.4 2.3 
Other States1,374 24,818.0 24.8 
Total insured portfolio5,419 $99,996.9 100.0 %
6


The following table presents BAM’s insured portfolio by issuer size of exposure as of December 31, 2023 and 2022:
$ in MillionsDecember 31, 2023December 31, 2022
Original Par Amount Per Issuer (1)
Number of RisksGross Par OutstandingPercent of Total Gross Par OutstandingNumber of RisksGross Par OutstandingPercent of Total Gross Par Outstanding
Less than $10 million2,915 $10,950.7 10.0 %2,822 $10,937.1 10.9 %
$10 to $50 million2,243 40,079.8 36.5 2,074 38,372.2 38.4 
$50 to $100 million376 20,874.3 19.0 332 19,090.3 19.1 
$100 to $200 million156 17,878.5 16.3 124 14,596.8 14.6 
$200 to $300 million42