General Motors Company
US ˙ NYSE ˙ US37045V1008

SecurityGM / General Motors Company
InstitutionRhumbline Advisers
Latest Disclosed Ownership1,603,442 shares
Latest Disclosed Value $ 119,456,373
Rhumbline Advisers reports 3.49% decrease in ownership of GM / General Motors Company

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 1,603,442 shares of General Motors Company (US:GM) valued at $119,456,429 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,661,441 shares of General Motors Company. This represents a change in shares of -3.49% during the quarter. The current value of the position is $131,658,623 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)
2026-05-12 2026-03-31 13F GEN MTRS CO COM COM 37045V100 1,603,442 -57,999 -3.49 119,456 -11.58 0.1022
2026-02-13 2025-12-31 13F GEN MTRS CO COM COM 37045V100 1,661,441 -98,912 -5.62 135,108 25.88 0.1092
2025-11-06 2025-09-30 13F GEN MTRS CO COM COM 37045V100 1,760,353 -13,101 -0.74 107,329 22.98 0.0862
2025-08-12 2025-06-30 13F GEN MTRS CO COM COM 37045V100 1,773,454 -120,917 -6.38 87,272 -2.04 0.0747
2025-05-29 2025-03-31 13F/A-1 GEN MTRS CO COM COM 37045V100 1,894,371 -295,363 -13.49 89,092 -23.62 0.0833
2025-04-08 2025-03-31 13F GEN MTRS CO COM COM 37045V100 1,894,371 -295,363 89,092 0.0833
2025-05-29 2024-12-31 13F/A-1 GEN MTRS CO COM COM 37045V100 2,189,734 -69,649 -3.08 116,647 15.14 0.1043
2025-01-30 2024-12-31 13F GEN MTRS CO COM COM 37045V100 2,189,734 -69,649 116,647 0.1043
2024-11-12 2024-09-30 13F GEN MTRS CO COM COM 37045V100 2,259,383 -59,755 -2.58 101,311 -5.97 0.0914
2024-08-01 2024-06-30 13F GEN MTRS CO COM COM 37045V100 2,319,138 -143,463 -5.83 107,747 -3.52 0.1013
2024-05-09 2024-03-31 13F GEN MTRS CO COM COM 37045V100 2,462,601 -317,389 -11.42 111,679 11.84 0.1072
2024-02-08 2023-12-31 13F GEN MTRS CO COM COM 37045V100 2,779,990 -33,149 -1.18 99,857 7.66 0.1047
2023-11-09 2023-09-30 13F GEN MTRS CO COM COM 37045V100 2,813,139 74,702 2.73 92,749 -12.16 0.1077
2023-08-08 2023-06-30 13F GEN MTRS CO COM COM 37045V100 2,738,437 -3,926 -0.14 105,594 105,494.00 0.1183
2023-05-11 2023-03-31 13F GEN MTRS CO COM COM 37045V100 2,742,363 -56,023 -2.00 101 -99.89 0.1241
2023-02-14 2022-12-31 13F GEN MTRS CO COM COM 37045V100 2,798,386 34,491 1.25 94,138 6.14 0.1265
2022-11-10 2022-09-30 13F GEN MTRS CO COM COM 37045V100 2,763,895 101,505 3.81 88,693 4.89 0.1321
2022-08-11 2022-06-30 13F GEN MTRS CO COM COM 37045V100 2,662,390 228,525 9.39 84,558 -20.57 0.1234
2022-05-12 2022-03-31 13F GEN MTRS CO COM COM 37045V100 2,433,865 81,468 3.46 106,457 -22.81 0.1370
2022-02-10 2021-12-31 13F GEN MTRS CO COM COM 37045V100 2,352,397 13,625 0.58 137,921 11.88 0.1690
2021-11-12 2021-09-30 13F GEN MTRS CO COM COM 37045V100 2,338,772 65,387 2.88 123,277 -8.36 0.1668
2021-08-05 2021-06-30 13F GEN MTRS CO COM COM 37045V100 2,273,385 37,739 1.69 134,516 4.71 0.1765
2021-05-06 2021-03-31 13F GEN MTRS CO COM COM 37045V100 2,235,646 -147,624 -6.19 128,460 29.45 0.1745
2021-02-10 2020-12-31 13F GEN MTRS CO COM COM 37045V100 2,383,270 -28,012 -1.16 99,239 39.09 0.1370
2020-11-12 2020-09-30 13F GEN MTRS CO COM COM 37045V100 2,411,282 -53,283 -2.16 71,350 14.43 0.1118
2020-08-13 2020-06-30 13F GEN MTRS CO COM COM 37045V100 2,464,565 147,706 6.38 62,353 29.51 0.1041
2020-05-06 2020-03-31 13F GEN MTRS CO COM COM 37045V100 2,316,859 71,735 3.20 48,144 -41.41 0.1009
2020-02-05 2019-12-31 13F GEN MTRS CO COM COM 37045V100 2,245,124 30,367 1.37 82,172 -1.01 0.1374
2019-10-23 2019-09-30 13F GEN MTRS CO COM COM 37045V100 2,214,757 37,089 1.70 83,009 -1.07 0.1517
2019-08-14 2019-06-30 13F GEN MTRS CO COM COM 37045V100 2,177,668 -44,537 -2.00 83,906 1.77 0.1575
2019-05-01 2019-03-31 13F GEN MTRS CO COM COM 37045V100 2,222,205 -39,731 -1.76 82,444 8.96 0.1597
2019-01-31 2018-12-31 13F GEN MTRS CO COM COM 37045V100 2,261,936 -10,679 -0.47 75,662 -1.12 0.1646
2018-11-07 2018-09-30 13F GEN MTRS CO COM COM 37045V100 2,272,615 5,169 0.23 76,519 -14.35 0.1478
2018-08-06 2018-06-30 13F GEN MTRS CO COM COM 37045V100 2,267,446 24,453 1.09 89,337 9.60 0.1802
2018-05-02 2018-03-31 13F GEN MTRS CO COM COM 37045V100 2,242,993 -2,496 -0.11 81,510 -11.44 0.1702
2018-02-09 2017-12-31 13F GEN MTRS CO COM COM 37045V100 2,245,489 17,133 0.77 92,043 2.29 0.1869
2017-11-06 2017-09-30 13F GEN MTRS CO COM COM 37045V100 2,228,356 -42,943 -1.89 89,981 13.42 0.1956
2017-08-02 2017-06-30 13F GEN MTRS CO COM COM 37045V100 2,271,299 -36,560 -1.58 79,336 -2.78 0.1811
2017-05-02 2017-03-31 13F GEN MTRS CO COM COM 37045V100 2,307,859 56,334 2.50 81,606 4.03 0.1906
2017-01-27 2016-12-31 13F GEN MTRS CO COM COM 37045V100 2,251,525 89,643 4.15 78,443 14.21 0.1988
2016-11-08 2016-09-30 13F GEN MTRS CO COM COM 37045V100 2,161,882 53,941 2.56 68,683 15.13 0.1893
2016-08-11 2016-06-30 13F GEN MTRS CO COM COM 37045V100 2,107,941 8,322 0.40 59,655 -9.60 0.1768
2016-05-02 2016-03-31 13F GENERAL MOTORS CO COM 37045V100 2,099,619 120,741 6.10 65,991 -1.95 0.2048
2016-02-03 2015-12-31 13F GENERAL MOTORS CO COM 37045V100 1,978,878 35,485 1.83 67,302 15.36 0.2166
2015-11-04 2015-09-30 13F GENERAL MOTORS CO COM 37045V100 1,943,393 96,257 5.21 58,341 -5.24 0.1985
2015-08-04 2015-06-30 13F GENERAL MOTORS CO COM 37045V100 1,847,136 -418,049 -18.46 61,565 -27.52 0.1962
2015-05-12 2015-03-31 13F GENERAL MOTORS CO COM 37045V100 2,265,185 1,083 0.05 84,944 7.47 0.2450
2015-02-06 2014-12-31 13F GENERAL MOTORS CO COM 37045V100 2,264,102 -14,717 -0.65 79,040 8.59 0.2296
2014-11-12 2014-09-30 13F GENERAL MOTORS CO COM 37045V100 2,278,819 11,141 0.49 72,785 -11.58 0.2186
2014-08-06 2014-06-30 13F GENERAL MOTORS CO COM 37045V100 2,267,678 447,561 24.59 82,317 31.40 0.2416
2014-05-06 2014-03-31 13F GENERAL MOTORS CO COM 37045V100 1,820,117 241,705 15.31 62,648 -2.89 0.1858
2014-02-03 2013-12-31 13F GENERAL MOTORS CO COM 37045V100 1,578,412 139,968 9.73 64,510 24.68 0.1903
2013-11-05 2013-09-30 13F GENERAL MOTORS CO COM 37045V100 1,438,444 81,048 5.97 51,741 14.43 0.1603
2013-08-07 2013-06-30 13F GENERAL MOTORS CO COM 37045V100 1,357,396 1,357,396 45,215 0.1453
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.