v3.26.1
Investment Securities (Tables)
6 Months Ended
Jun. 30, 2026
Marketable Securities [Abstract]  
Schedule of FHN's Investment Securities
The following table summarizes FHN’s investment securities as of June 30, 2026 and December 31, 2025.
INVESTMENT SECURITIES
June 30, 2026
(Dollars in millions)Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Fair
Value
Securities available for sale:
Government agency issued MBS$3,727 $$(340)$3,390 
Government agency issued CMO2,942 (238)2,706 
Other U.S. government agencies1,560 (110)1,451 
States and municipalities350 (25)326 
Total securities available for sale (a)$8,579 $7 $(713)$7,873 
Securities held to maturity:
Government agency issued MBS$735 $— $(80)$655 
Government agency issued CMO454 — (71)383 
Total securities held to maturity (a)$1,189 $ $(151)$1,038 

December 31, 2025
(Dollars in millions)Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Fair
Value
Securities available for sale:
Government agency issued MBS$3,964 $$(332)$3,641 
Government agency issued CMO3,092 (229)2,869 
Other U.S. government agencies1,424 (109)1,317 
States and municipalities361 (25)338 
Total securities available for sale (a)$8,841 $19 $(695)$8,165 
Securities held to maturity:
Government agency issued MBS$758 $— $(76)$682 
Government agency issued CMO458 — (67)391 
Total securities held to maturity (a)$1,216 $— $(143)$1,073 
(a)Includes $6.8 billion and $7.2 billion of securities available for sale as of June 30, 2026 and December 31, 2025, respectively and $789 million and $1.1 billion of securities held to maturity as of June 30, 2026 and December 31, 2025, respectively pledged to secure public deposits, securities sold under agreements to repurchase, and for other purposes.
Schedule of Amortized Cost and Fair Value by Contractual Maturity
The amortized cost and fair value by contractual maturity for the debt securities portfolio as of June 30, 2026 are provided below.
DEBT SECURITIES PORTFOLIO MATURITIES
Held to MaturityAvailable for Sale
(Dollars in millions)Amortized
Cost
Fair
Value
Amortized
Cost
Fair
Value
Within 1 year$— $— $12 $12 
After 1 year through 5 years— — 138 127 
After 5 years through 10 years— — 707 684 
After 10 years— — 1,053 954 
Subtotal— — 1,910 1,777 
Government agency issued MBS and CMO (a)1,189 1,038 6,669 6,096 
Total$1,189 $1,038 $8,579 $7,873 
(a)Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
Schedule of Investments within the Available for Sale Portfolio that had Unrealized Losses
The following table provides information on investments within the available-for-sale portfolio that had unrealized losses as of June 30, 2026 and December 31, 2025.
AFS INVESTMENT SECURITIES WITH UNREALIZED LOSSES
As of June 30, 2026
Less than 12 months12 months or longerTotal
(Dollars in millions)Fair
Value
Unrealized
Losses
Fair
Value
Unrealized
Losses
Fair
Value
Unrealized
Losses
Government agency issued MBS$418 $(3)$2,647 $(337)$3,065 $(340)
Government agency issued CMO637 (2)1,556 (236)2,193 (238)
Other U.S. government agencies547 (2)752 (108)1,299 (110)
States and municipalities 36 — 209 (25)245 (25)
Total$1,638 $(7)$5,164 $(706)$6,802 $(713)
 
As of December 31, 2025
Less than 12 months12 months or longerTotal
(Dollars in millions)Fair
Value
Unrealized
Losses
Fair
Value
Unrealized
Losses
Fair
Value
Unrealized
Losses
Government agency issued MBS$190 $(1)$2,791 $(331)$2,981 $(332)
Government agency issued CMO353 — 1,706 (229)2,059 (229)
Other U.S. government agencies281 (1)796 (108)1,077 (109)
States and municipalities — 236 (25)237 (25)
Total$825 $(2)$5,529 $(693)$6,354 $(695)