西方聯盟銀行
MX ˙ BMV ˙ US9576381092
SecurityMX:WAL / Western Alliance Bancorporation
InstitutionMarshall Wace, Llp
Latest Disclosed Ownership21,472 shares
Latest Disclosed Value $ 1,521,291
Marshall Wace, Llp reports 77.75% increase in ownership of WAL / Western Alliance Bancorporation

On May 14, 2026 - Marshall Wace, Llp filed a 13F-HR form disclosing ownership of 21,472 shares of Western Alliance Bancorporation (MX:WAL) valued at $1,521,291 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 12,080 shares of Western Alliance Bancorporation. This represents a change in shares of 77.75% during the quarter.

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)
2026-05-14 2026-03-31 13F WESTERN ALLIANCE COMMON STOCK 957638109 21,472 9,392 77.75 1,521 49.85 0.0007
2026-02-13 2025-12-31 13F WESTERN ALLIANCE COMMON STOCK 957638109 12,080 -152,633 -92.67 1,016 -92.89 0.0009
2025-11-13 2025-09-30 13F WESTERN ALLIANCE COMMON STOCK 957638109 164,713 154,987 1,593.53 14,284 1,784.30 0.0145
2025-08-13 2025-06-30 13F WESTERN ALLIANCE COMMON STOCK 957638109 9,726 -176,347 -94.77 758 -94.70 0.0009
2025-05-15 2025-03-31 13F WESTERN ALLIANCE COMMON STOCK 957638109 186,073 -783,043 -80.80 14,296 -82.34 0.0182
2025-02-13 2024-12-31 13F WESTERN ALLIANCE COMMON STOCK 957638109 969,116 -89,103 -8.42 80,960 -11.54 0.0973
2024-11-14 2024-09-30 13F WESTERN ALLIANCE COMMON STOCK 957638109 1,058,219 96,807 10.07 91,525 51.54 0.1115
2024-08-14 2024-06-30 13F WESTERN ALLIANCE COMMON STOCK 957638109 961,412 116,322 13.76 60,396 11.34 0.0806
2024-05-15 2024-03-31 13F WESTERN ALLIANCE COMMON STOCK 957638109 845,090 -139,241 -14.15 54,246 -16.23 0.0826
2024-02-14 2023-12-31 13F WESTERN ALLIANCE COMMON STOCK 957638109 984,331 172,192 21.20 64,759 73.46 0.1097
2023-11-14 2023-09-30 13F WESTERN ALLIANCE COMMON STOCK 957638109 812,139 744,947 1,108.68 37,334 1,423.84 0.0756
2023-08-14 2023-06-30 13F WESTERN ALLIANCE COMMON STOCK 957638109 67,192 7,141 11.89 2,450 14.81 0.0048
2023-05-15 2023-03-31 13F WESTERN ALLIANCE COMMON STOCK 957638109 60,051 26,113 76.94 2,134 5.59 0.0045
2023-02-14 2022-12-31 13F WESTERN ALLIANCE COMMON STOCK 957638109 33,938 33,938 2,021 0.0045
2022-11-14 2022-09-30 13F WESTERN ALLIANCE COMMON STOCK 957638109 0 -12,512 -100.00 0 -100.00
2022-08-15 2022-06-30 13F WESTERN ALLIANCE COMMON STOCK 957638109 12,512 -2,834 -18.47 883 -30.53 0.0018
2022-05-16 2022-03-31 13F WESTERN ALLIANCE COMMON STOCK 957638109 15,346 -12,749 -45.38 1,271 -57.98 0.0024
2022-02-14 2021-12-31 13F WESTERN ALLIANCE COMMON STOCK 957638109 28,095 28,095 3,025 0.0056
2020-02-14 2019-12-31 13F WESTERN ALLIANCE COMMON STOCK 957638109 0 -70,366 -100.00 0 -100.00
2019-11-14 2019-09-30 13F WESTERN ALLIANCE COMMON STOCK 957638109 70,366 -64,993 -48.02 3,242 -46.44 0.0255
2019-08-14 2019-06-30 13F WESTERN ALLIANCE COMMON STOCK 957638109 135,359 -159,337 -54.07 6,053 -49.95 0.0498
2019-05-29 2019-03-31 13F/A-1 WESTERN ALLIANCE COMMON STOCK 957638109 294,696 -444,562 -60.14 12,094 -58.57 0.1137
2019-05-14 2019-03-31 13F WESTERN ALLIANCE COMMON STOCK 957638109 294,696 -444,562 12,094
2019-02-14 2018-12-31 13F WESTERN ALLIANCE COMMON STOCK 957638109 739,258 739,258 29,194 0.2980
2016-11-10 2016-09-30 13F WESTERN ALLIANCE COMMON STOCK 957638109 0 -16,000 -100.00 0 -100.00
2016-08-12 2016-06-30 13F WESTERN ALLIANCE COMMON STOCK 957638109 16,000 16,000 522 0.0044
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.