Prosperity Bancshares, Inc.
US ˙ NYSE ˙ US7436061052

SecurityPB / Prosperity Bancshares, Inc.
InstitutionMercer Global Advisors Inc /adv
Latest Disclosed Ownership80,986 shares
Latest Disclosed Value $ 5,440,606
Mercer Global Advisors Inc /adv reports 85.17% increase in ownership of PB / Prosperity Bancshares, Inc.

On May 15, 2026 - Mercer Global Advisors Inc /adv filed a 13F-HR form disclosing ownership of 80,986 shares of Prosperity Bancshares, Inc. (US:PB) valued at $5,440,639 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 43,736 shares of Prosperity Bancshares, Inc.. This represents a change in shares of 85.17% during the quarter. The current value of the position is $5,617,189 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F PROSPERITY BANCSHARES COM 743606105 80,986 37,250 85.17 5,441 80.01 0.0081
2026-02-17 2025-12-31 13F PROSPERITY BANCSHARES COM 743606105 43,736 12,756 41.17 3,023 47.06 0.0046
2025-11-14 2025-09-30 13F PROSPERITY BANCSHARES COM 743606105 30,980 14,168 84.27 2,055 74.15 0.0034
2025-08-14 2025-06-30 13F PROSPERITY BANCSHARES COM 743606105 16,812 9,673 135.50 1,181 131.83 0.0024
2025-05-15 2025-03-31 13F PROSPERITY BANCSHARES COM 743606105 7,139 -838 -10.51 510 -15.31 0.0012
2025-02-14 2024-12-31 13F PROSPERITY BANCSHARES COM 743606105 7,977 590 7.99 601 16.02 0.0015
2024-11-14 2024-09-30 13F PROSPERITY BANCSHARES COM 743606105 7,387 -151 -2.00 518 12.61 0.0012
2024-08-12 2024-06-30 13F PROSPERITY BANCSHARES COM 743606105 7,538 -3 -0.04 461 0.0013
2024-05-15 2024-03-31 13F PROSPERITY BANCSHARES COM 743606105 7,541 -2,612 -25.73 0 0.0014
2024-02-15 2023-12-31 13F PROSPERITY BANCSHARES COM 743606105 10,153 1,544 17.93 1 0.0021
2023-11-15 2023-09-30 13F/A-1 PROSPERITY BANCSHARES COM 743606105 8,609 904 11.73 0 0.0018
2023-11-14 2023-09-30 13F PROSPERITY BANCSHARES COM 743606105 8,609 904 0 0.0018
2023-08-14 2023-06-30 13F PROSPERITY BANCSHARES COM 743606105 7,705 -474 -5.80 0 0.0017
2023-05-16 2023-03-31 13F PROSPERITY BANCSHARES COM 743606105 8,179 303 3.85 1 0.0023
2023-02-09 2022-12-31 13F PROSPERITY BANCSHARES COM 743606105 7,876 86 1.10 1 -100.00 0.0027
2022-11-15 2022-09-30 13F PROSPERITY BANCSHARES COM 743606105 7,790 -837 -9.70 519 -11.88 0.0031
2022-08-10 2022-06-30 13F PROSPERITY BANCSHARES COM 743606105 8,627 1,123 14.97 589 13.05 0.0036
2022-05-10 2022-03-31 13F PROSPERITY BANCSHARES COM 743606105 7,504 561 8.08 521 3.78 0.0031
2022-02-04 2021-12-31 13F PROSPERITY BANCSHARES COM 743606105 6,943 224 3.33 502 5.02 0.0031
2021-11-10 2021-09-30 13F PROSPERITY BANCSHARES COM 743606105 6,719 828 14.06 478 13.00 0.0033
2021-08-10 2021-06-30 13F PROSPERITY BANCSHARES COM 743606105 5,891 11 0.19 423 -3.86 0.0033
2021-08-10 2021-03-31 13F/A-1 PROSPERITY BANCSHARES COM 743606105 5,880 1,091 22.78 440 32.53 0.0040
2021-05-11 2021-03-31 13F PROSPERITY BANCSHARES COM 743606105 5,880 1,091 440 0.0042
2021-02-12 2020-12-31 13F PROSPERITY BANCSHARES COM 743606105 4,789 110 2.35 332 36.63 0.0041
2020-12-10 2020-09-30 13F PROSPERITY BANCSHARES COM 743606105 4,679 -4 -0.09 243 -12.59 0.0037
2020-08-10 2020-06-30 13F PROSPERITY BANCSHARES COM 743606105 4,683 7 0.15 278 23.01 0.0050
2020-05-18 2020-03-31 13F PROSPERITY BANCSHARES COM 743606105 4,676 -113 -2.36 226 -34.30 0.0050
2020-02-13 2019-12-31 13F PROSPERITY BANCSHARES INC COM COM 743606105 4,789 4,789 344 0.0069
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.