Genuine Parts Company
MX ˙ BMV ˙ US3724601055
SecurityMX:GPC / Genuine Parts Company
InstitutionAdage Capital Partners Gp, L.l.c.
ManagerPhil Gross, Robert Atchinson
Latest Disclosed Ownership639,100 shares
Latest Disclosed Value $ 67,584,825
Adage Capital Partners Gp, L.l.c. reports 408.84% increase in ownership of GPC / Genuine Parts Company

On May 15, 2026 - Adage Capital Partners Gp, L.l.c. filed a 13F-HR form disclosing ownership of 639,100 shares of Genuine Parts Company (MX:GPC) valued at $67,584,825 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 125,600 shares of Genuine Parts Company. This represents a change in shares of 408.84% 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)
2026-05-15 2026-03-31 13F GENUINE PARTS COM 372460105 639,100 513,500 408.84 67,585 337.64 0.1042
2026-02-17 2025-12-31 13F GENUINE PARTS COM 372460105 125,600 -1,000 -0.79 15,444 -11.99 0.0234
2025-11-14 2025-09-30 13F GENUINE PARTS COM 372460105 126,600 -500 -0.39 17,547 13.80 0.0278
2025-08-14 2025-06-30 13F GENUINE PARTS COM 372460105 127,100 100,200 372.49 15,419 381.21 0.0260
2025-05-15 2025-03-31 13F GENUINE PARTS COM 372460105 26,900 -66,415 -71.17 3,205 -70.59 0.0059
2025-02-14 2024-12-31 13F GENUINE PARTS COM 372460105 93,315 93,315 10,895 0.0191
2024-08-14 2024-06-30 13F GENUINE PARTS COM 372460105 0 -104,500 -100.00 0 -100.00
2024-05-15 2024-03-31 13F GENUINE PARTS COM 372460105 104,500 18,300 21.23 16,190 35.62 0.0306
2024-02-14 2023-12-31 13F GENUINE PARTS COM 372460105 86,200 -53,400 -38.25 11,939 -40.77 0.0247
2023-11-14 2023-09-30 13F GENUINE PARTS COM 372460105 139,600 -400 -0.29 20,155 -14.93 0.0457
2023-08-14 2023-06-30 13F GENUINE PARTS COM 372460105 140,000 48,900 53.68 23,692 55.45 0.0515
2023-05-15 2023-03-31 13F GENUINE PARTS COM 372460105 91,100 22,700 33.19 15,242 28.42 0.0342
2023-02-14 2022-12-31 13F GENUINE PARTS COM 372460105 68,400 -25,700 -27.31 11,868 -15.54 0.0284
2022-11-14 2022-09-30 13F GENUINE PARTS COM 372460105 94,100 -3,400 -3.49 14,051 8.35 0.0348
2022-08-15 2022-06-30 13F GENUINE PARTS COM 372460105 97,500 97,500 12,968 0.0297
2022-05-16 2022-03-31 13F GENUINE PARTS COM 372460105 0 -151,800 -100.00 0 -100.00
2022-02-14 2021-12-31 13F GENUINE PARTS COM 372460105 151,800 -2,300 -1.49 21,282 13.92 0.0383
2021-11-15 2021-09-30 13F GENUINE PARTS COM 372460105 154,100 111,512 261.84 18,682 246.86 0.0368
2021-08-16 2021-06-30 13F GENUINE PARTS COM 372460105 42,588 32,520 323.00 5,386 362.71 0.0105
2021-05-17 2021-03-31 13F GENUINE PARTS COM 372460105 10,068 2,136 26.93 1,164 46.05 0.0024
2021-02-16 2020-12-31 13F GENUINE PARTS COM 372460105 7,932 -3,727 -31.97 797 -28.20 0.0017
2020-11-16 2020-09-30 13F GENUINE PARTS COM 372460105 11,659 11,659 1,110 0.0028
2020-08-14 2020-06-30 13F GENUINE PARTS COM 372460105 0 -100,200 -100.00 0 -100.00
2020-05-15 2020-03-31 13F GENUINE PARTS COM 372460105 100,200 -68,000 -40.43 6,746 -62.25 0.0201
2020-02-14 2019-12-31 13F GENUINE PARTS COM 372460105 168,200 101,837 153.45 17,868 170.36 0.0439
2019-11-14 2019-09-30 13F GENUINE PARTS COM 372460105 66,363 66,363 6,609 0.0162
2019-08-14 2019-06-30 13F GENUINE PARTS COM 372460105 0 -55,800 -100.00 0 -100.00
2019-05-15 2019-03-31 13F GENUINE PARTS COM 372460105 55,800 -1,300 -2.28 6,251 14.01 0.0156
2019-02-14 2018-12-31 13F GENUINE PARTS COM 372460105 57,100 -24,000 -29.59 5,483 -31.98 0.0152
2018-11-14 2018-09-30 13F GENUINE PARTS COM 372460105 81,100 44,000 118.60 8,061 136.74 0.0180
2018-08-14 2018-06-30 13F GENUINE PARTS COM 372460105 37,100 -300,080 -89.00 3,405 -88.76 0.0078
2018-05-15 2018-03-31 13F GENUINE PARTS COM 372460105 337,180 216,630 179.70 30,292 164.49 0.0705
2018-02-14 2017-12-31 13F GENUINE PARTS COM 372460105 120,550 -29,000 -19.39 11,453 -19.93 0.0259
2017-11-14 2017-09-30 13F GENUINE PARTS COM 372460105 149,550 149,550 14,304 0.0348
2017-08-14 2017-06-30 13F GENUINE PARTS COM 372460105 0 -56,900 -100.00 0 -100.00
2017-05-15 2017-03-31 13F GENUINE PARTS COM 372460105 56,900 56,900 5,258 0.0133
2017-02-14 2016-12-31 13F GENUINE PARTS COM 372460105 0 -217,055 -100.00 0 -100.00
2016-11-14 2016-09-30 13F GENUINE PARTS COM 372460105 217,055 9,100 4.38 21,803 3.55 0.0600
2016-08-15 2016-06-30 13F GENUINE PARTS COM 372460105 207,955 115,300 124.44 21,055 128.71 0.0574
2016-05-16 2016-03-31 13F GENUINE PARTS COM 372460105 92,655 -134,547 -59.22 9,206 -52.82 0.0250
2016-02-16 2015-12-31 13F GENUINE PARTS COM 372460105 227,202 -2,900 -1.26 19,514 2.31 0.0511
2015-11-16 2015-09-30 13F GENUINE PARTS COM 372460105 230,102 -2,800 -1.20 19,073 -8.53 0.0529
2015-08-14 2015-06-30 13F GENUINE PARTS COM 372460105 232,902 0 0.00 20,852 -3.93 0.0520
2015-05-15 2015-03-31 13F GENUINE PARTS COM 372460105 232,902 5,400 2.37 21,704 -10.48 0.0529
2015-02-17 2014-12-31 13F GENUINE PARTS COM 372460105 227,502 -4,100 -1.77 24,245 19.35 0.0593
2014-11-14 2014-09-30 13F GENUINE PARTS COM 372460105 231,602 -3,400 -1.45 20,314 -1.55 0.0502
2014-08-14 2014-06-30 13F GENUINE PARTS COM 372460105 235,002 -3,700 -1.55 20,633 -0.47 0.0533
2014-05-15 2014-03-31 13F GENUINE PARTS COM 372460105 238,702 6,100 2.62 20,731 7.14 0.0566
2014-02-14 2013-12-31 13F GENUINE PARTS COM 372460105 232,602 0 0.00 19,350 2.84 0.0512
2013-11-14 2013-09-30 13F GENUINE PARTS COM 372460105 232,602 6,875 3.05 18,815 6.76 0.0541
2013-08-14 2013-06-30 13F GENUINE PARTS COM 372460105 225,727 1,800 0.80 17,623 0.90 0.0543
2013-07-12 2013-03-31 13F/A-1 GENUINE PARTS COM 372460105 223,927 223,927 17,466 0.0577
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.