East West Bancorp, Inc.
US ˙ NasdaqGS ˙ US27579R1041

SecurityEWBC / East West Bancorp, Inc.
InstitutionBoston Partners
Latest Disclosed Ownership3,443,809 shares
Latest Disclosed Value $ 367,678,516
Boston Partners reports 10.29% decrease in ownership of EWBC / East West Bancorp, Inc.

On May 11, 2026 - Boston Partners filed a 13F-HR form disclosing ownership of 3,443,809 shares of East West Bancorp, Inc. (US:EWBC) valued at $367,661,049 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 3,838,729 shares of East West Bancorp, Inc.. This represents a change in shares of -10.29% during the quarter. The current value of the position is $417,217,460 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)
2026-05-11 2026-03-31 13F EAST WEST BANCORP COM 27579R104 3,443,809 -394,920 -10.29 367,679 -14.78 0.1646
2026-02-13 2025-12-31 13F EAST WEST BANCORP COM 27579R104 3,838,729 -36,008 -0.93 431,452 4.60 0.4467
2025-11-13 2025-09-30 13F EAST WEST BANCORP COM 27579R104 3,874,737 633,649 19.55 412,464 26.03 0.4235
2025-08-12 2025-06-30 13F/A-1 EAST WEST BANCORP COM 27579R104 3,241,088 920,159 39.65 327,271 57.15 0.3634
2025-08-07 2025-06-30 13F EAST WEST BANCORP COM 27579R104 3,241,088 920,159 327,271 0.1503
2025-05-13 2025-03-31 13F EAST WEST BANCORP COM 27579R104 2,320,929 -62,355 -2.62 208,259 -8.77 0.2519
2025-02-11 2024-12-31 13F EAST WEST BANCORP COM 27579R104 2,383,284 447,057 23.09 228,269 42.45 0.2777
2024-11-12 2024-09-30 13F EAST WEST BANCORP COM 27579R104 1,936,227 -3,308 -0.17 160,240 12.81 0.1891
2024-08-14 2024-06-30 13F EAST WEST BANCORP COM 27579R104 1,939,535 -7,097 -0.36 142,048 -7.75 0.1765
2024-05-28 2024-03-31 13F/A-1 EAST WEST BANCORP COM 27579R104 1,946,632 -767,355 -28.27 153,981 -21.15 0.1834
2024-05-13 2024-03-31 13F EAST WEST BANCORP COM 27579R104 1,946,632 -767,355 153,981 0.0762
2024-02-07 2023-12-31 13F EAST WEST BANCORP COM 27579R104 2,713,987 886,841 48.54 195,279 102.75 0.2586
2023-11-08 2023-09-30 13F EAST WEST BANCORP COM 27579R104 1,827,146 487,418 36.38 96,313 36.12 0.1333
2023-08-10 2023-06-30 13F EAST WEST BANCORP COM 27579R104 1,339,728 -2,789,141 -67.55 70,755 -69.12 0.0952
2023-05-09 2023-03-31 13F EAST WEST BANCORP COM 27579R104 4,128,869 -1,885,026 -31.34 229,094 -42.23 0.3150
2023-02-08 2022-12-31 13F EAST WEST BANCORP COM 27579R104 6,013,895 93,530 1.58 396,572 -0.27 0.5365
2022-11-09 2022-09-30 13F EAST WEST BANCORP COM 27579R104 5,920,365 383,311 6.92 397,635 10.80 0.5820
2022-08-10 2022-06-30 13F EAST WEST BANCORP COM 27579R104 5,537,054 482,639 9.55 358,885 -10.14 0.5016
2022-05-10 2022-03-31 13F EAST WEST BANCORP COM 27579R104 5,054,415 179,461 3.68 399,362 4.10 0.4838
2022-02-04 2021-12-31 13F EAST WEST BANCORP COM 27579R104 4,874,954 -44,473 -0.90 383,649 0.57 0.4621
2021-11-05 2021-09-30 13F EAST WEST BANCORP COM 27579R104 4,919,427 641,131 14.99 381,492 24.39 0.4833
2021-08-12 2021-06-30 13F EAST WEST BANCORP COM 27579R104 4,278,296 76,752 1.83 306,694 -1.10 0.3911
2021-05-10 2021-03-31 13F EAST WEST BANCORP COM 27579R104 4,201,544 315,090 8.11 310,104 57.35 0.4159
2021-02-10 2020-12-31 13F/A-1 EAST WEST BANCORP COM 27579R104 3,886,454 941,966 31.99 197,082 104.44 0.3065
2021-02-04 2020-12-31 13F EAST WEST BANCORP COM 27579R104 3,886,454 941,966 197,082 118,237.4857
2020-11-13 2020-09-30 13F/A-1 EAST WEST BANCORP COM 27579R104 2,944,488 46,503 1.60 96,403 -8.20 0.1755
2020-11-09 2020-09-30 13F EAST WEST BANCORP COM 27579R104 2,897,985 0 105,010 77,089.8490
2020-08-12 2020-06-30 13F EAST WEST BANCORP COM 27579R104 2,897,985 -143,314 -4.71 105,010 34.17 0.1929
2020-05-13 2020-03-31 13F EAST WEST BANCORP COM 27579R104 3,041,299 -1,181,822 -27.98 78,269 -61.95 0.1554
2020-02-06 2019-12-31 13F/A-1 EAST WEST BANCORP COM 27579R104 4,223,121 -947,624 -18.33 205,678 -10.19 0.2720
2020-02-05 2019-12-31 13F EAST WEST BANCORP COM 27579R104 4,223,121 -947,624 205,678 115,638.1788
2019-11-20 2019-09-30 13F/A-1 EAST WEST BANCORP COM 27579R104 5,170,745 179,203 3.59 229,015 -1.89 0.3101
2019-11-08 2019-09-30 13F EAST WEST BANCORP COM 27579R104 4,991,910 368 233,353 0.3086
2019-08-26 2019-06-30 13F/A-1 EAST WEST BANCORP COM 27579R104 4,991,542 309,257 6.60 233,427 3.93 0.3061
2019-08-09 2019-06-30 13F EAST WEST BANCORP COM 27579R104 4,991,712 309,427 233,435
2019-05-13 2019-03-31 13F/A-1 EAST WEST BANCORP COM 27579R104 4,682,285 94,548 2.06 224,610 12.47 0.2976
2019-05-03 2019-03-31 13F EAST WEST BANCORP COM 27579R104 4,682,285 94,548 224,610
2019-02-07 2018-12-31 13F EAST WEST BANCORP COM 27579R104 4,587,737 -1,309,518 -22.21 199,705 -43.91 0.2870
2018-11-14 2018-09-30 13F EAST WEST BANCORP COM 27579R104 5,897,255 -581,087 -8.97 356,017 -15.71 0.4137
2018-08-03 2018-06-30 13F EAST WEST BANCORP COM 27579R104 6,478,342 115,315 1.81 422,388 6.14 0.5062
2018-05-04 2018-03-31 13F EAST WEST BANCORP COM 27579R104 6,363,027 -465,795 -6.82 397,944 -4.20 0.4798
2018-02-14 2017-12-31 13F/A-1 EAST WEST BANCORP COM 27579R104 6,828,822 209,514 3.17 415,397 4.98 0.4894
2018-02-01 2017-12-31 13F EAST WEST BANCORP COM 27579R104 6,828,822 209,514 415,397
2017-11-02 2017-09-30 13F EAST WEST BANCORP COM 27579R104 6,619,308 50,476 0.77 395,702 2.83 0.4889
2017-08-02 2017-06-30 13F EAST WEST BANCORP COM 27579R104 6,568,832 828,887 14.44 384,802 29.90 0.4893
2017-05-03 2017-03-31 13F EAST WEST BANCORP COM 27579R104 5,739,945 526,404 10.10 296,238 11.79 0.3783
2017-02-06 2016-12-31 13F EAST WEST BANCORP COM 27579R104 5,213,541 187,725 3.74 265,004 43.64 0.3484
2016-11-09 2016-09-30 13F EAST WEST BANCORP COM 27579R104 5,025,816 1,125,150 28.85 184,498 38.38 0.2580
2016-08-05 2016-06-30 13F EAST WEST BANCORP COM 27579R104 3,900,666 400,844 11.45 133,325 17.29 0.1926
2016-05-12 2016-03-31 13F EAST WEST BANCORP COM 27579R104 3,499,822 -932,212 -21.03 113,674 -38.29 0.1674
2016-02-08 2015-12-31 13F EAST WEST BANCORP COM 27579R104 4,432,034 352,927 8.65 184,195 17.53 0.2638
2015-11-10 2015-09-30 13F EAST WEST BANCORP COM 27579R104 4,079,107 380,584 10.29 156,719 -5.46 0.2389
2015-08-10 2015-06-30 13F EAST WEST BANCORP COM 27579R104 3,698,523 234,285 6.76 165,768 18.27 0.2381
2015-05-05 2015-03-31 13F EAST WEST BANCORP COM 27579R104 3,464,238 288,412 9.08 140,163 14.01 0.2087
2015-02-09 2014-12-31 13F EAST WEST BANCORP COM 27579R104 3,175,826 -219,925 -6.48 122,936 6.48 0.1845
2014-11-12 2014-09-30 13F EAST WEST BANCORP COM 27579R104 3,395,751 -290,504 -7.88 115,455 -10.49 0.1874
2014-08-08 2014-06-30 13F EAST WEST BANCORP COM 27579R104 3,686,255 496,815 15.58 128,982 10.80 0.2160
2014-05-07 2014-03-31 13F EAST WEST BANCORP COM 27579R104 3,189,440 -329,126 -9.35 116,414 -5.39 0.2124
2014-02-06 2013-12-31 13F EAST WEST BANCORP COM 27579R104 3,518,566 732,307 26.28 123,044 38.22 0.2522
2013-11-12 2013-09-30 13F EAST WEST BANCORP COM 27579R104 2,786,259 574,143 25.95 89,021 46.34 0.2147
2013-08-01 2013-06-30 13F EAST WEST BANCORP COM 27579R104 2,212,116 2,212,116 60,833 0.1675
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.