Western Alliance Bancorporation
MX ˙ BMV ˙ US9576381092
SecurityMX:WAL / Western Alliance Bancorporation
InstitutionMillennium Management Llc
ManagerIsrael Englander
Latest Disclosed Ownership682,909 shares
Latest Disclosed Value $ 48,384,103
Millennium Management Llc ownership in WAL / Western Alliance Bancorporation

On May 15, 2026 - Millennium Management Llc filed a 13F-HR form disclosing ownership of 682,909 shares of Western Alliance Bancorporation (MX:WAL) valued at $48,384,103 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 60,629 shares of Western Alliance Bancorporation. This represents a change in shares of 1,026.37% during the quarter.

Millennium Management Llc has a history of taking positions in derivatives of the underlying security (WAL) in the form of stock options. The firm currently holds call options representing 5,800 of underlying shares valued at $410,930 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:WAL / Western Alliance Bancorporation Historical Put/Call Ratio
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 WESTERN ALLIANCE BANCORP COM 957638109 682,909 622,280 1,026.37 48,384 849.26 0.0201
2026-02-17 2025-12-31 13F WESTERN ALLIANCE BANCORP COM 957638109 60,629 -101,185 -62.53 5,097 -63.68 0.0021
2025-11-14 2025-09-30 13F WESTERN ALLIANCE BANCORP COM 957638109 161,814 101,643 168.92 14,033 199.06 0.0060
2025-08-14 2025-06-30 13F WESTERN ALLIANCE BANCORP COM 957638109 60,171 57,177 1,909.72 4,692 1,940.00 0.0023
2025-05-15 2025-03-31 13F WESTERN ALLIANCE BANCORP COM 957638109 2,994 -101,279 -97.13 230 -97.36 0.0001
2025-02-14 2024-12-31 13F WESTERN ALLIANCE BANCORP COM 957638109 104,273 -577,187 -84.70 8,711 -85.22 0.0043
2024-11-14 2024-09-30 13F WESTERN ALLIANCE BANCORP COM 957638109 681,460 -62,754 -8.43 58,939 26.07 0.0279
2024-08-14 2024-06-30 13F WESTERN ALLIANCE BANCORP COM 957638109 744,214 726,333 4,062.04 46,752 3,975.94 0.0217
2024-05-15 2024-03-31 13F WESTERN ALLIANCE BANCORP COM 957638109 17,881 -139,675 -88.65 1,148 -88.93 0.0005
2024-02-14 2023-12-31 13F WESTERN ALLIANCE BANCORP COM 957638109 157,556 -416,627 -72.56 10,366 -60.73 0.0045
2023-11-14 2023-09-30 13F WESTERN ALLIANCE BANCORP COM 957638109 574,183 -577,710 -50.15 26,395 -37.17 0.0133
2023-08-14 2023-06-30 13F WESTERN ALLIANCE BANCORP COM 957638109 1,151,893 512,941 80.28 42,010 85.00 0.0207
2023-05-15 2023-03-31 13F WESTERN ALLIANCE BANCORP COM 957638109 638,952 -37,062 -5.48 22,708 -43.60 0.0130
2023-02-14 2022-12-31 13F WESTERN ALLIANCE BANCORP COM 957638109 676,014 136,153 25.22 40,263 13.45 0.0223
2022-11-14 2022-09-30 13F WESTERN ALLIANCE BANCORP COM 957638109 539,861 519,820 2,593.78 35,490 2,408.13 0.0210
2022-08-15 2022-06-30 13F WESTERN ALLIANCE BANCORP COM 957638109 20,041 -366,725 -94.82 1,415 -95.58 0.0009
2022-05-16 2022-03-31 13F WESTERN ALLIANCE BANCORP COM 957638109 386,766 67,770 21.24 32,032 -6.72 0.0170
2022-02-14 2021-12-31 13F WESTERN ALLIANCE BANCORP COM 957638109 318,996 -297,358 -48.24 34,340 -48.80 0.0175
2021-11-15 2021-09-30 13F WESTERN ALLIANCE BANCORP COM 957638109 616,354 203,960 49.46 67,072 75.16 0.0402
2021-08-16 2021-06-30 13F WESTERN ALLIANCE BANCORP COM 957638109 412,394 390,608 1,792.93 38,291 1,761.50 0.0235
2021-05-17 2021-03-31 13F WESTERN ALLIANCE BANCORP COM 957638109 21,786 -113,525 -83.90 2,057 -74.64 0.0015
2021-02-16 2020-12-31 13F WESTERN ALLIANCE BANCORP COM 957638109 135,311 52,011 62.44 8,112 207.97 0.0059
2020-11-16 2020-09-30 13F WESTERN ALLIANCE BANCORP COM 957638109 83,300 18,711 28.97 2,634 7.69 0.0032
2020-08-14 2020-06-30 13F WESTERN ALLIANCE BANCORP COM 957638109 64,589 42,870 197.38 2,446 267.82 0.0034
2020-05-14 2020-03-31 13F WESTERN ALLIANCE BANCORP COM 957638109 21,719 -420,089 -95.08 665 -97.36 0.0015
2020-02-14 2019-12-31 13F WESTERN ALLIANCE BANCORP COM 957638109 441,808 -408,293 -48.03 25,183 -35.71 0.0315
2019-11-14 2019-09-30 13F WESTERN ALLIANCE BANCORP COM 957638109 850,101 -190,556 -18.31 39,172 -15.83 0.0619
2019-08-15 2019-06-30 13F/A-1 WESTERN ALLIANCE BANCORP COM 957638109 1,040,657 685,948 193.38 46,538 219.69 0.0700
2019-08-14 2019-06-30 13F WESTERN ALLIANCE BANCORP COM 957638109 1,040,657 685,948 46,538
2019-05-14 2019-03-31 13F WESTERN ALLIANCE BANCORP COM 957638109 354,709 -1,125,334 -76.03 14,557 -75.09 0.0218
2019-02-15 2018-12-31 13F/A-1 WESTERN ALLIANCE BANCORP COM 957638109 1,480,043 -12,484 -0.84 58,447 -31.17 0.0911
2019-02-14 2018-12-31 13F WESTERN ALLIANCE BANCORP COM 957638109 1,480,043 58,447
2018-11-14 2018-09-30 13F WESTERN ALLIANCE BANCORP COM 957638109 1,492,527 -1,107,057 -42.59 84,910 -42.30 0.1041
2018-08-14 2018-06-30 13F WESTERN ALLIANCE BANCORP COM 957638109 2,599,584 144,811 5.90 147,162 3.17 0.1920
2018-05-15 2018-03-31 13F WESTERN ALLIANCE BANCORP COM 957638109 2,454,773 -412,237 -14.38 142,647 -12.13 0.1903
2018-02-14 2017-12-31 13F WESTERN ALLIANCE BANCORP COM 957638109 2,867,010 -412,418 -12.58 162,330 -6.75 0.2241
2017-11-14 2017-09-30 13F WESTERN ALLIANCE BANCORP COM 957638109 3,279,428 676,417 25.99 174,072 35.92 0.2652
2017-08-14 2017-06-30 13F WESTERN ALLIANCE BANCORP COM 957638109 2,603,011 -235,728 -8.30 128,068 -8.10 0.2285
2017-05-15 2017-03-31 13F WESTERN ALLIANCE BANCORP COM 957638109 2,838,739 168,574 6.31 139,354 7.14 0.2553
2017-02-14 2016-12-31 13F WESTERN ALLIANCE BANCORP COM 957638109 2,670,165 795,378 42.42 130,064 84.80 0.2724
2016-11-14 2016-09-30 13F WESTERN ALLIANCE BANCORP COM 957638109 1,874,787 -270,181 -12.60 70,380 0.50 0.1180
2016-08-15 2016-06-30 13F WESTERN ALLIANCE BANCORP COM 957638109 2,144,968 254,006 13.43 70,033 10.95 0.1603
2016-05-16 2016-03-31 13F WESTERN ALLIANCE BANCORP COM 957638109 1,890,962 -122,372 -6.08 63,120 -12.57 0.1578
2016-02-16 2015-12-31 13F WESTERN ALLIANCE BANCORP COM 957638109 2,013,334 54,586 2.79 72,198 20.02 0.1518
2015-11-16 2015-09-30 13F WESTERN ALLIANCE BANCORP COM 957638109 1,958,748 162,520 9.05 60,153 -0.80 0.1165
2015-08-14 2015-06-30 13F WESTERN ALLIANCE BANCORP COM 957638109 1,796,228 163,959 10.04 60,641 25.34 0.1147
2015-05-15 2015-03-31 13F WESTERN ALLIANCE BANCORP COM 957638109 1,632,269 -276,568 -14.49 48,380 -8.83 0.0900
2015-02-17 2014-12-31 13F WESTERN ALLIANCE BANCORP COM 957638109 1,908,837 -444,788 -18.90 53,066 -5.66 0.1124
2014-11-14 2014-09-30 13F WESTERN ALLIANCE BANCORP COM 957638109 2,353,625 298,340 14.52 56,252 15.00 0.1423
2014-08-14 2014-06-30 13F WESTERN ALLIANCE BANCORP COM 957638109 2,055,285 775,593 60.61 48,916 55.39 0.1355
2014-05-15 2014-03-31 13F WESTERN ALLIANCE BANCORP COM 957638109 1,279,692 1,080,619 542.83 31,480 562.74 0.0912
2014-02-14 2013-12-31 13F WESTERN ALLIANCE BANCORP COM 957638109 199,073 108,788 120.49 4,750 177.94 0.0150
2013-11-14 2013-09-30 13F WESTERN ALLIANCE BANCORP COM 957638109 90,285 -80,969 -47.28 1,709 -36.96 0.0055
2013-08-14 2013-06-30 13F WESTERN ALLIANCE BANCORP COM 957638109 171,254 171,254 2,711 0.0083
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-15 2026-03-31 13F WESTERN ALLIANCE BANCORP COM Call 5,800 -63.52 411 -69.31 n/a n/a n/a
2026-02-17 2025-12-31 13F WESTERN ALLIANCE BANCORP COM Call 15,900 1,337 n/a n/a n/a
2025-05-15 2025-03-31 13F WESTERN ALLIANCE BANCORP COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-14 2024-12-31 13F WESTERN ALLIANCE BANCORP COM Call 5,500 0.00 459 -3.37 n/a n/a n/a
2024-11-14 2024-09-30 13F WESTERN ALLIANCE BANCORP COM Call 5,500 -11.29 476 22.11 n/a n/a n/a
2024-08-14 2024-06-30 13F WESTERN ALLIANCE BANCORP COM Call 6,200 -36.08 389 -37.46 n/a n/a n/a
2024-05-15 2024-03-31 13F WESTERN ALLIANCE BANCORP COM Call 9,700 -71.22 623 -71.94 n/a n/a n/a
2024-02-14 2023-12-31 13F WESTERN ALLIANCE BANCORP COM Call 33,700 -58.34 2,217 -40.37 n/a n/a n/a
2023-11-14 2023-09-30 13F WESTERN ALLIANCE BANCORP COM Call 80,900 3,719 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-15 2026-03-31 13F WESTERN ALLIANCE BANCORP COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2026-02-17 2025-12-31 13F WESTERN ALLIANCE BANCORP COM Put 10,700 900 n/a n/a n/a
2025-08-14 2025-06-30 13F WESTERN ALLIANCE BANCORP COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-05-15 2025-03-31 13F WESTERN ALLIANCE BANCORP COM Put 4,100 -89.24 315 -90.10 n/a n/a n/a
2025-02-14 2024-12-31 13F WESTERN ALLIANCE BANCORP COM Put 38,100 0.00 3,183 -3.43 n/a n/a n/a
2024-11-14 2024-09-30 13F WESTERN ALLIANCE BANCORP COM Put 38,100 1.06 3,295 39.15 n/a n/a n/a
2024-08-14 2024-06-30 13F WESTERN ALLIANCE BANCORP COM Put 37,700 -41.00 2,368 -42.26 n/a n/a n/a
2024-05-15 2024-03-31 13F WESTERN ALLIANCE BANCORP COM Put 63,900 -6.99 4,102 -9.25 n/a n/a n/a
2024-02-14 2023-12-31 13F WESTERN ALLIANCE BANCORP COM Put 68,700 15.46 4,520 65.23 n/a n/a n/a
2023-11-14 2023-09-30 13F WESTERN ALLIANCE BANCORP COM Put 59,500 -84.82 2,735 -80.87 n/a n/a n/a
2023-08-14 2023-06-30 13F WESTERN ALLIANCE BANCORP COM Put 392,000 161.33 14,296 168.17 n/a n/a n/a
2023-05-15 2023-03-31 13F WESTERN ALLIANCE BANCORP COM Put 150,000 5,331 n/a n/a n/a
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.