v3.26.1
INVESTMENT SECURITIES
 3 Months Ended
Mar. 31, 2026
Investments, Debt and Equity Securities [Abstract]  
INVESTMENT SECURITIES INVESTMENT SECURITIES
The amortized cost and fair value of AFS debt securities are presented in the table below. There was no ACL associated with the AFS portfolio at March 31, 2026 and December 31, 2025. Accrued interest receivable on AFS debt securities totaled $15.7 million at March 31, 2026 and $16.2 million at December 31, 2025, and is excluded from the estimate of credit losses and assessed separately in other assets in the Consolidated Balance Sheets. Accordingly, we have excluded accrued interest receivable from both the fair value and amortized cost basis of AFS debt securities.
TABLE 3.1
(in millions)Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
 Value
Debt Securities AFS:
March 31, 2026
U.S. Treasury$354 $1 $(1)$354 
U.S. government agencies31 — — 31 
U.S. GSE266 — (1)265 
Residential MBS:
Agency MBS824 4 (12)816 
Agency CMO631 — (63)568 
Agency commercial MBS1,659 11 (16)1,654 
States of the U.S. and political subdivisions (municipals)13 — (1)12 
Other debt securities76 — (1)75 
Total debt securities AFS$3,854 $16 $(95)$3,775 
(in millions)Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
 Value
Debt Securities AFS:
December 31, 2025
U.S. Treasury$354 $2 $— $356 
U.S. government agencies35 — — 35 
U.S. GSE266 — — 266 
Residential MBS:
Agency MBS801 7 (8)800 
Agency CMO662 — (61)601 
Agency commercial MBS1,595 19 (15)1,599 
States of the U.S. and political subdivisions (municipals)20 — (1)19 
Other debt securities50 1 — 51 
Total debt securities AFS$3,783 $29 $(85)$3,727 
The amortized cost and fair value of HTM debt securities are presented in the following table. The ACL for the HTM portfolio was $0.33 million and $0.29 million at March 31, 2026 and December 31, 2025, respectively. Accrued interest receivable on HTM debt securities totaled $15.5 million and $15.7 million at March 31, 2026 and December 31, 2025, respectively, and is excluded from the estimate of credit losses and assessed separately in other assets in the Consolidated Balance Sheets. Accordingly, we have excluded accrued interest receivable from both the fair value and amortized cost basis of HTM debt securities.
TABLE 3.2
(in millions)Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
 Value
Debt Securities HTM:
March 31, 2026
Residential MBS:
Agency MBS$751 $1 $(57)$695 
Agency CMO588 — (65)523 
Agency commercial MBS1,837 12 (22)1,827 
States of the U.S. and political subdivisions (municipals)970 1 (80)891 
Other debt securities37 — (1)36 
Total debt securities HTM$4,183 $14 $(225)$3,972 
(in millions)Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
 Value
Debt Securities HTM:
December 31, 2025
Residential MBS:
Agency MBS$784 $2 $(55)$731 
Agency CMO612 — (62)550 
Agency commercial MBS1,715 18 (19)1,714 
States of the U.S. and political subdivisions (municipals)982 1 (60)923 
Other debt securities24 — (1)23 
Total debt securities HTM$4,117 $21 $(197)$3,941 
​
Net unrealized losses on the AFS and HTM portfolios are primarily due to the increase in market interest rates since the time of purchase, with 86.3% of these securities backed or sponsored by the U.S. government as of March 31, 2026. There were no significant gross gains or gross losses realized on investment securities during the three months ended March 31, 2026 or 2025.
As of March 31, 2026, the amortized cost and fair value of debt securities, by contractual maturities, were as follows:
TABLE 3.3
Available for SaleHeld to Maturity
(in millions)Amortized
Cost		Fair
Value		Amortized
Cost		Fair
Value
Due in one year or less$205 $205 $8 $8 
Due after one year but within five years382 380 95 92 
Due after five years but within ten years138 137 318 299 
Due after ten years15 15 586 528 
740 737 1,007 927 
Residential MBS:
Agency MBS824 816 751 695 
Agency CMO631 568 588 523 
Agency commercial MBS1,659 1,654 1,837 1,827 
Total debt securities$3,854 $3,775 $4,183 $3,972 
Actual maturities may differ from contractual terms because security issuers may have the right to call or prepay obligations with or without penalties. Periodic principal payments are received on residential MBS based on the payment patterns of the underlying collateral.
Following is information relating to investment securities pledged:
TABLE 3.4
(dollars in millions)March 31,
2026		December 31,
2025
Securities pledged (carrying value):
To secure public deposits, trust deposits and for other purposes as required by law$6,407 $6,445 
As collateral for short-term borrowings115 140 
Securities pledged as a percent of total securities82.0 %84.0 %
Following are summaries of the fair values of AFS debt securities in an unrealized loss position for which an ACL has not been recorded, segregated by security type and length of time in a continuous loss position:
TABLE 3.5
Less than 12 Months12 Months or MoreTotal
(dollars in millions)#Fair
 Value		Unrealized
Losses		#Fair
 Value		Unrealized
Losses		#Fair
 Value		Unrealized
Losses
Debt Securities AFS
March 31, 2026
U.S. Treasury5 $129 $(1)— $— $— 5 $129 $(1)
U.S. government agencies4 6 — 11 17 — 15 23 — 
U.S. GSE6 164 (1)3 51 — 9 215 (1)
Residential MBS:
Agency MBS8 228 (4)86 204 (8)94 432 (12)
Agency CMO— — — 64 568 (63)64 568 (63)
Agency commercial MBS13 377 (2)21 344 (14)34 721 (16)
States of the U.S. and political subdivisions (municipals)— — — 7 12 (1)7 12 (1)
Other debt securities6 38 (1)3 9 — 9 47 (1)
Total 42 $942 $(9)195 $1,205 $(86)237 $2,147 $(95)
Less than 12 Months12 Months or MoreTotal
(dollars in millions)#Fair
 Value		Unrealized
Losses		#Fair
 Value		Unrealized
Losses		#Fair
 Value		Unrealized
Losses
Debt Securities AFS
December 31, 2025
U.S. government agencies5 $8 $— 12 $20 $— 17 $28 $— 
U.S. GSE2 65 — 3 51 — 5 116 — 
Residential MBS:
Agency MBS1 46 — 90 251 (8)91 297 (8)
Agency CMO— — — 64 601 (61)64 601 (61)
Agency commercial MBS4 132 (1)22 371 (14)26 503 (15)
States of the U.S. and political subdivisions (municipals)— — — 9 19 (1)9 19 (1)
Other debt securities— — — 3 9 — 3 9 — 
Total12 $251 $(1)203 $1,322 $(84)215 $1,573 $(85)
We evaluated the AFS debt securities that were in an unrealized loss position at March 31, 2026. Based on the credit ratings and/or implied government guarantee for these securities, we concluded the loss position is temporary and caused by movements of interest rates and does not reflect any expected credit losses. We do not intend to sell these AFS debt securities and it is not more likely than not that we will be required to sell these securities before the recovery of their amortized cost basis.
Credit Quality Indicators
We use credit ratings and the most recent financial information to help evaluate the credit quality of our credit-related AFS and HTM securities portfolios. Management reviews the credit profile of each issuer on an annual basis, and more frequently as needed. Based on the nature of the issuers and current conditions, we have determined that investment securities backed by the U.S. Department of the Treasury, Fannie Mae, Freddie Mac, FHLB, Ginnie Mae, and the SBA have zero expected credit loss.
Our municipal bond portfolio, with a carrying amount of $1.0 billion as of March 31, 2026 is highly rated with an average rating of AA and 96% of the portfolio is rated A or better. All of the investment securities in the municipal portfolio are general obligation bonds. Geographically, municipal bonds generally support our primary footprint as 60% of the securities are from municipalities located in the primary states within which we conduct business. The average holding size of the securities in the municipal bond portfolio is $2.5 million.
The ACL on the HTM municipal bond portfolio is calculated on each bond using:
•The bond’s underlying credit rating, time to maturity and exposure amount;
•Credit enhancements that improve the bond’s credit rating (e.g., insurance); and
•Moody’s U.S. Municipal Bond Default and Recovery Rates, 1970-2024.
By using these components, we derive the expected credit loss on the HTM general obligation municipal bond portfolio. We further refine the expected credit loss by factoring in economic forecast data using our Commercial and Industrial Non-Manufacturing loan portfolio forecast adjustment as derived through our assessment of the loan portfolio as a proxy for our municipal bond portfolio.
Our corporate bond portfolio, with a carrying amount of $112.1 million as of March 31, 2026 consists of debentures of banks and bank holding companies. The average holding size of the securities in the corporate bond portfolio is $4.7 million.
The ACL on the HTM corporate bond portfolio is calculated using:
•The bond’s credit rating, time to maturity and exposure amount;
•Moody’s Annual Default Study, 03/12/2026; and
•The most recent financial statements.
By using these components, we derive the expected credit loss on the HTM corporate bond portfolio. We further refine the expected credit loss by factoring in economic forecast data using our bank-wide loan portfolio forecast adjustment as derived through our assessment of FNBPA's loan portfolio as a proxy for our corporate bond portfolio.
For the year-to-date periods ending March 31, 2026 and 2025, we had no significant provision expense and no charge-offs or recoveries for the investment securities portfolio. The ACL on the HTM portfolio was $0.33 million, consisting of $0.06 million relating to the municipal bond portfolio and $0.27 million relating to other debt securities, as of March 31, 2026, and $0.06 million relating to the municipal bond portfolio and $0.23 million relating to other debt securities as of December 31, 2025. The AFS securities portfolios did not have an ACL at March 31, 2026 or December 31, 2025 and there were no investment securities that were past due or on non-accrual at either date.