BorgWarner Inc.
MX ˙ BMV ˙ US0997241064
SecurityMX:BWA / BorgWarner Inc.
InstitutionRhumbline Advisers
Latest Disclosed Ownership609,638 shares
Latest Disclosed Value $ 33,078,897
Rhumbline Advisers reports 0.16% increase in ownership of BWA / BorgWarner Inc.

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 609,638 shares of BorgWarner Inc. (MX:BWA) valued at $33,078,897 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 608,681 shares of BorgWarner Inc.. This represents a change in shares of 0.16% 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)
2026-05-12 2026-03-31 13F BORG WARNER INC COM COM 099724106 609,638 957 0.16 33,079 20.60 0.0283
2026-02-13 2025-12-31 13F BORG WARNER INC COM COM 099724106 608,681 49,275 8.81 27,427 11.53 0.0222
2025-11-06 2025-09-30 13F BORG WARNER INC COM COM 099724106 559,406 10,426 1.90 24,591 33.80 0.0198
2025-08-12 2025-06-30 13F BORG WARNER INC COM COM 099724106 548,980 -7,086 -1.27 18,380 15.37 0.0157
2025-05-29 2025-03-31 13F/A-1 BORG WARNER INC COM COM 099724106 556,066 155,912 38.96 15,931 25.24 0.0149
2025-04-08 2025-03-31 13F BORG WARNER INC COM COM 099724106 556,066 155,912 15,931 0.0149
2025-05-29 2024-12-31 13F/A-1 BORG WARNER INC COM COM 099724106 400,154 -23,479 -5.54 12,721 -17.26 0.0114
2025-01-30 2024-12-31 13F BORG WARNER INC COM COM 099724106 400,154 -23,479 12,721 0.0114
2024-11-12 2024-09-30 13F BORG WARNER INC COM COM 099724106 423,633 -14,816 -3.38 15,374 8.76 0.0139
2024-08-01 2024-06-30 13F BORG WARNER INC COM COM 099724106 438,449 -34,417 -7.28 14,136 -13.95 0.0133
2024-05-09 2024-03-31 13F BORG WARNER INC COM COM 099724106 472,866 -11,199 -2.31 16,427 -5.34 0.0158
2024-02-08 2023-12-31 13F BORG WARNER INC COM COM 099724106 484,065 -2,005 -0.41 17,354 -11.56 0.0182
2023-11-09 2023-09-30 13F BORG WARNER INC COM COM 099724106 486,070 -1,212 -0.25 19,623 -17.67 0.0228
2023-08-08 2023-06-30 13F BORG WARNER INC COM COM 099724106 487,282 -5,152 -1.05 23,833 99,200.00 0.0267
2023-05-11 2023-03-31 13F BORG WARNER INC COM COM 099724106 492,434 -101 -0.02 24 -99.88 0.0298
2023-02-14 2022-12-31 13F BORG WARNER INC COM COM 099724106 492,535 17,004 3.58 19,825 32.77 0.0267
2022-11-10 2022-09-30 13F BORG WARNER INC COM COM 099724106 475,531 14,950 3.25 14,932 -2.85 0.0222
2022-08-11 2022-06-30 13F BORG WARNER INC COM COM 099724106 460,581 36,363 8.57 15,370 -6.86 0.0224
2022-05-12 2022-03-31 13F BORG WARNER INC COM COM 099724106 424,218 -15,586 -3.54 16,502 -16.75 0.0212
2022-02-10 2021-12-31 13F BORG WARNER INC COM COM 099724106 439,804 8,103 1.88 19,822 6.26 0.0243
2021-11-12 2021-09-30 13F BORG WARNER INC COM COM 099724106 431,701 -16,537 -3.69 18,654 -14.26 0.0252
2021-08-05 2021-06-30 13F BORG WARNER INC COM COM 099724106 448,238 -16,943 -3.64 21,757 0.89 0.0285
2021-05-06 2021-03-31 13F BORG WARNER INC COM COM 099724106 465,181 -31,614 -6.36 21,566 12.35 0.0293
2021-02-10 2020-12-31 13F BORG WARNER INC COM COM 099724106 496,795 72,743 17.15 19,196 16.85 0.0265
2020-11-12 2020-09-30 13F BORG WARNER INC COM COM 099724106 424,052 -8,765 -2.03 16,428 7.53 0.0257
2020-08-13 2020-06-30 13F BORG WARNER INC COM COM 099724106 432,817 -11,166 -2.51 15,278 41.20 0.0255
2020-05-06 2020-03-31 13F BORG WARNER INC COM COM 099724106 443,983 52,844 13.51 10,820 -36.23 0.0227
2020-02-05 2019-12-31 13F BORG WARNER INC COM COM 099724106 391,139 21,035 5.68 16,968 24.99 0.0284
2019-10-23 2019-09-30 13F BORG WARNER INC COM COM 099724106 370,104 5,318 1.46 13,575 -11.36 0.0248
2019-08-14 2019-06-30 13F BORG WARNER INC COM COM 099724106 364,786 8,058 2.26 15,314 11.76 0.0287
2019-05-01 2019-03-31 13F BORG WARNER INC COM COM 099724106 356,728 -38,028 -9.63 13,702 -0.09 0.0265
2019-01-31 2018-12-31 13F BORG WARNER INC COM COM 099724106 394,756 -12,515 -3.07 13,714 -21.29 0.0298
2018-11-07 2018-09-30 13F BORG WARNER INC COM COM 099724106 407,271 465 0.11 17,423 -0.77 0.0337
2018-08-06 2018-06-30 13F BORG WARNER INC COM COM 099724106 406,806 5,788 1.44 17,558 -12.83 0.0354
2018-05-02 2018-03-31 13F BORG WARNER INC COM COM 099724106 401,018 -933 -0.23 20,143 -1.91 0.0421
2018-02-09 2017-12-31 13F BORG WARNER INC COM COM 099724106 401,951 5,222 1.32 20,536 1.04 0.0417
2017-11-06 2017-09-30 13F BORG WARNER INC COM COM 099724106 396,729 5,469 1.40 20,324 22.63 0.0442
2017-08-02 2017-06-30 13F BORG WARNER INC COM COM 099724106 391,260 3,497 0.90 16,574 2.28 0.0378
2017-05-02 2017-03-31 13F BORG WARNER INC COM COM 099724106 387,763 12,962 3.46 16,205 9.63 0.0379
2017-01-27 2016-12-31 13F BORG WARNER INC COM COM 099724106 374,801 28,556 8.25 14,782 21.35 0.0375
2016-11-08 2016-09-30 13F BORG WARNER INC COM COM 099724106 346,245 10,487 3.12 12,181 22.89 0.0336
2016-08-11 2016-06-30 13F BORG WARNER INC COM COM 099724106 335,758 -27,641 -7.61 9,912 -28.97 0.0294
2016-05-02 2016-03-31 13F BORGWARNER INC US COM 099724106 363,399 1,667 0.46 13,955 -10.76 0.0433
2016-02-03 2015-12-31 13F BORGWARNER INC US COM 099724106 361,732 918 0.25 15,638 4.21 0.0503
2015-11-04 2015-09-30 13F BORGWARNER INC US COM 099724106 360,814 -6,215 -1.69 15,006 -28.07 0.0511
2015-08-04 2015-06-30 13F BORGWARNER INC US COM 099724106 367,029 42,734 13.18 20,862 6.37 0.0665
2015-05-12 2015-03-31 13F BORGWARNER INC US COM 099724106 324,295 -612 -0.19 19,613 9.85 0.0566
2015-02-06 2014-12-31 13F BORGWARNER INC US COM 099724106 324,907 -7,485 -2.25 17,854 2.10 0.0519
2014-11-12 2014-09-30 13F BORGWARNER INC US COM 099724106 332,392 -8,847 -2.59 17,487 -21.39 0.0525
2014-08-06 2014-06-30 13F BORGWARNER INC US COM 099724106 341,239 -10,153 -2.89 22,245 2.99 0.0653
2014-05-06 2014-03-31 13F BORGWARNER INC US COM 099724106 351,392 -14,896 -4.07 21,600 5.47 0.0641
2014-02-03 2013-12-31 13F BORGWARNER INC US COM 099724106 366,288 170,937 87.50 20,479 3.39 0.0604
2013-11-05 2013-09-30 13F BORGWARNER INC US COM 099724106 195,351 -191 -0.10 19,807 17.58 0.0614
2013-08-07 2013-06-30 13F BORGWARNER INC US COM 099724106 195,542 195,542 16,846 0.0541
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.