Western Alliance Bancorporation
US ˙ NYSE ˙ US9576381092

SecurityWAL / Western Alliance Bancorporation
InstitutionNatixis Advisors, L.p.
Latest Disclosed Ownership23,232 shares
Latest Disclosed Value $ 1,647
Natixis Advisors, L.p. reports 54.15% decrease in ownership of WAL / Western Alliance Bancorporation

On May 13, 2026 - Natixis Advisors, L.p. filed a 13F-HR form disclosing ownership of 23,232 shares of Western Alliance Bancorporation (US:WAL) valued at $1,645,987 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 50,672 shares of Western Alliance Bancorporation. This represents a change in shares of -54.15% during the quarter. The current value of the position is $1,806,288 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)
2026-05-13 2026-03-31 13F WESTERN ALLIANCE BANCORP COM 957638109 23,232 -27,440 -54.15 2 -75.00 0.0023
2026-02-10 2025-12-31 13F WESTERN ALLIANCE BANCORP COM 957638109 50,672 -264,380 -83.92 4 -85.19 0.0060
2025-11-13 2025-09-30 13F WESTERN ALLIANCE BANCORP COM 957638109 315,052 31,396 11.07 27 22.73 0.0399
2025-08-13 2025-06-30 13F WESTERN ALLIANCE BANCORP COM 957638109 283,656 -47,388 -14.31 22 -12.00 0.0351
2025-05-08 2025-03-31 13F WESTERN ALLIANCE BANCORP COM 957638109 331,044 -7,351 -2.17 25 -10.71 0.0470
2025-02-10 2024-12-31 13F WESTERN ALLIANCE BANCORP COM 957638109 338,395 2,899 0.86 28 -3.45 0.0528
2024-11-06 2024-09-30 13F WESTERN ALLIANCE BANCORP COM 957638109 335,496 44,106 15.14 29 61.11 0.0566
2024-08-01 2024-06-30 13F WESTERN ALLIANCE BANCORP COM 957638109 291,390 15,108 5.47 18 5.88 0.0398
2024-04-25 2024-03-31 13F WESTERN ALLIANCE BANCORP COM 957638109 276,282 39,128 16.50 18 13.33 0.0408
2024-02-06 2023-12-31 13F WESTERN ALLIANCE BANCORP COM 957638109 237,154 99,386 72.14 16 150.00 0.0411
2023-11-13 2023-09-30 13F WESTERN ALLIANCE BANCORP COM 957638109 137,768 137,768 6 0.0194
2023-05-11 2023-03-31 13F WESTERN ALLIANCE BANCORP COM 957638109 0 -162,520 -100.00 0 -100.00
2023-01-27 2022-12-31 13F WESTERN ALLIANCE BANCORP COM 957638109 162,520 -82,823 -33.76 10 -99.94 0.0366
2022-11-14 2022-09-30 13F WESTERN ALLIANCE BANCORP COM 957638109 245,343 16,948 7.42 16,129 0.02 0.0682
2022-08-12 2022-06-30 13F WESTERN ALLIANCE BANCORP COM 957638109 228,395 47,568 26.31 16,125 7.67 0.0709
2022-05-12 2022-03-31 13F WESTERN ALLIANCE BANCORP COM 957638109 180,827 37,959 26.57 14,976 -2.63 0.0571
2022-02-08 2021-12-31 13F WESTERN ALLIANCE BANCORP COM 957638109 142,868 7,135 5.26 15,380 4.13 0.0587
2021-11-15 2021-09-30 13F WESTERN ALLIANCE BANCORP COM 957638109 135,733 11,156 8.96 14,770 27.69 0.0607
2021-08-12 2021-06-30 13F WESTERN ALLIANCE BANCORP COM 957638109 124,577 12,869 11.52 11,567 9.65 0.0540
2021-05-05 2021-03-31 13F WESTERN ALLIANCE BANCORP COM 957638109 111,708 -864 -0.77 10,549 56.30 0.0551
2021-02-12 2020-12-31 13F WESTERN ALLIANCE BANCORP COM 957638109 112,572 -19,372 -14.68 6,749 61.77 0.0389
2020-11-12 2020-09-30 13F WESTERN ALLIANCE BANCORP COM 957638109 131,944 23,957 22.19 4,172 2.03 0.0263
2020-08-11 2020-06-30 13F WESTERN ALLIANCE BANCORP COM 957638109 107,987 67,351 165.74 4,089 228.70 0.0271
2020-04-27 2020-03-31 13F WESTERN ALLIANCE BANCORP COM 957638109 40,636 -6,061 -12.98 1,244 -53.27 0.0101
2020-02-10 2019-12-31 13F WESTERN ALLIANCE BANCORP COM 957638109 46,697 4,205 9.90 2,662 35.96 0.0188
2019-11-12 2019-09-30 13F WESTERN ALLIANCE BANCORP COM 957638109 42,492 6,080 16.70 1,958 20.27 0.0155
2019-08-12 2019-06-30 13F WESTERN ALLIANCE BANCORP COM 957638109 36,412 2,175 6.35 1,628 15.87 0.0133
2019-05-15 2019-03-31 13F/A-1 WESTERN ALLIANCE BANCORP COM 957638109 34,237 5,501 19.14 1,405 23.90 0.0123
2019-05-15 2019-03-31 13F WESTERN ALLIANCE BANCORP COM 957638109 34,237 5,501 1,405
2019-02-13 2018-12-31 13F/A-1 WESTERN ALLIANCE BANCORP COM 957638109 28,736 -4,769 -14.23 1,134 -40.50 0.0112
2019-02-13 2018-12-31 13F WESTERN ALLIANCE BANCORP COM 957638109 28,736 -4,769 1,134
2018-11-13 2018-09-30 13F WESTERN ALLIANCE BANCORP COM 957638109 33,505 6,561 24.35 1,906 24.98 0.0168
2018-08-14 2018-06-30 13F/A-1 WESTERN ALLIANCE BANCORP COM 957638109 26,944 -258 -0.95 1,525 -3.54 0.0146
2018-08-14 2018-06-30 13F WESTERN ALLIANCE BANCORP COM 957638109 26,944 1,525
2018-05-10 2018-03-31 13F WESTERN ALLIANCE BANCORP COM 957638109 27,202 -1,700 -5.88 1,581 -3.36 0.0156
2018-02-14 2017-12-31 13F WESTERN ALLIANCE BANCORP COM 957638109 28,902 3,282 12.81 1,636 20.38 0.0167
2017-11-14 2017-09-30 13F WESTERN ALLIANCE BANCORP COM 957638109 25,620 7,830 44.01 1,359 55.31 0.0144
2017-07-27 2017-06-30 13F WESTERN ALLIANCE BANCORP COM 957638109 17,790 1,285 7.79 875 8.02 0.0095
2017-05-12 2017-03-31 13F WESTERN ALLIANCE BANCORP COM 957638109 16,505 -141 -0.85 810 -0.12 0.0090
2017-02-07 2016-12-31 13F WESTERN ALLIANCE BANCORP COM 957638109 16,646 2,939 21.44 811 57.48 0.0098
2016-11-04 2016-09-30 13F WESTERN ALLIANCE BANCORP COM 957638109 13,707 3,506 34.37 515 54.65 0.0067
2016-08-01 2016-06-30 13F WESTERN ALLIANCE BANCORP COM 957638109 10,201 10,201 333 0.0046
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.