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Frost Bank: Securities Portfolio

Data as of · Call Report Schedule RC-B How we update

The investment portfolio: what the bank owns, how it is split between available-for-sale and held-to-maturity, and the unrealized gain or loss sitting in it. Unrealized losses on held-to-maturity securities do not run through capital, which is why the ratio to equity is worth watching.

The standout move of Q2 2026 was in Pledged share of securities: 6.83 percentage points higher than in Q1 2026, at 42.45%.

Portfolio size

Portfolio size for Frost Bank, Q2 2026
Line item Q2 2026
Total securities $21.43B
Available-for-sale securities $18.05B
Held-to-maturity securities $3.39B
Trading account assets $156.3M
Municipal securities $2.31B
Securities to total assets 39.73%

Portfolio mix

Portfolio mix for Frost Bank, Q2 2026
Line item Q2 2026
Available-for-sale share of securities 84.20%
Held-to-maturity share of securities 15.80%
Pledged share of securities 42.45%

Unrealized gains and losses

Unrealized gains and losses for Frost Bank, Q2 2026
Line item Q2 2026
Unrealized gain/(loss), available-for-sale -$1.05B
Unrealized gain/(loss), held-to-maturity -$135.2M
Total unrealized gain/(loss) -$1.19B
Unrealized gain/(loss) to equity -25.54%

Carrying value less fair value. A negative figure is an unrealized loss: the position is worth less than the balance sheet carries it at.

Securities earnings

Securities earnings for Frost Bank, Q2 2026
Line item Q2 2026
Yield on securities 3.86%
Realized gain/(loss) on securities $0
Realized gain/(loss), available-for-sale $0
Realized gain/(loss), held-to-maturity $0

Securities Portfolio trend

Last 12 quarters as filed. Every value plotted here also appears in the tables above.

Available-for-sale vs held-to-maturity
Unrealized gain/(loss) to equity

Negative bars are unrealized losses measured against equity capital.

Yield on securities

Securities Portfolio by quarter

Values plotted above, Frost Bank, oldest first
Quarter Available-for-saleHeld-to-maturityUnrealized G/(L) to equityYield on securities
Q3 2023 $16.07B $3.63B -89.42% 3.09%
Q4 2023 $16.54B $3.62B -40.74% 3.08%
Q1 2024 $15.14B $3.60B -48.77% 3.14%
Q2 2024 $15.15B $3.59B -49.84% 3.21%
Q3 2024 $15.28B $3.57B -29.48% 3.24%
Q4 2024 $15.00B $3.53B -45.32% 3.29%
Q1 2025 $16.82B $3.51B -40.22% 3.50%
Q2 2025 $16.57B $3.49B -41.19% 3.67%
Q3 2025 $16.84B $3.46B -29.75% 3.73%
Q4 2025 $15.93B $3.43B -25.97% 3.70%
Q1 2026 $16.75B $3.41B -29.48% 3.74%
Q2 2026 $18.05B $3.39B -25.54% 3.86%

Frost Bank securities portfolio, all the way back

Securities Portfolio back to 2001 · peer percentiles on every line item · Excel export

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Source: Call Report Schedule RC-B, as filed with the FFIEC and standardized by BankRegReports. Dollar amounts are as reported, point-in-time; income statement items are year-to-date through the report date. See the full Frost Bank profile, peer group comparison, or how this data updates.

Regulator records: FDIC BankFind (cert 5510) · FFIEC NIC profile (RSSD 682563)