Thompson Siegel & Walmsley’s Marathon Petroleum MPC Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q2 | $4.75M | Sell |
18,590
-477
| -3% | -$117K | 0.09% | 236 |
|
|
2026
Q1 | $4.66M | Sell |
19,067
-1,141
| -6% | -$230K | 0.08% | 235 |
|
|
2025
Q4 | $3.29M | Sell |
20,208
-50
| -0.2% | -$9.35K | 0.06% | 252 |
|
|
2025
Q3 | $3.9M | Buy |
20,258
+112
| +0.6% | +$19.7K | 0.06% | 247 |
|
|
2025
Q2 | $3.35M | Sell |
20,146
-125
| -0.6% | -$18.7K | 0.06% | 239 |
|
|
2025
Q1 | $2.95M | Sell |
20,271
-53
| -0.3% | -$7.84K | 0.05% | 227 |
|
|
2024
Q4 | $2.83M | Sell |
20,324
-112
| -0.5% | -$17.1K | 0.04% | 231 |
|
|
2024
Q3 | $3.33M | Hold |
20,436
| – | – | 0.05% | 232 |
|
|
2024
Q2 | $3.54M | Sell |
20,436
-1,089
| -5% | -$203K | 0.06% | 219 |
|
|
2024
Q1 | $4.34M | Sell |
21,525
-1,399
| -6% | -$239K | 0.07% | 213 |
|
|
2023
Q4 | $3.4M | Sell |
22,924
-375
| -2% | -$55.7K | 0.06% | 222 |
|
|
2023
Q3 | $3.53M | Sell |
23,299
-469
| -2% | -$65.4K | 0.06% | 214 |
|
|
2023
Q2 | $2.77M | Sell |
23,768
-677
| -3% | -$78.7K | 0.04% | 216 |
|
|
2023
Q1 | $3.3M | Sell |
24,445
-175
| -0.7% | -$21.9K | 0.05% | 207 |
|
|
2022
Q4 | $2.87M | Sell |
24,620
-716
| -3% | -$81.6K | 0.05% | 209 |
|
|
2022
Q3 | $2.52M | Sell |
25,336
-1,000
| -4% | -$93.6K | 0.04% | 219 |
|
|
2022
Q2 | $2.17M | Sell |
26,336
-5,064
| -16% | -$473K | 0.03% | 229 |
|
|
2022
Q1 | $2.69M | Sell |
31,400
-34,662
| -52% | -$2.64M | 0.04% | 229 |
|
|
2021
Q4 | $4.23M | Buy |
66,062
+2,045
| +3% | +$131K | 0.06% | 207 |
|
|
2021
Q3 | $3.96M | Buy |
64,017
+695
| +1% | +$40K | 0.06% | 208 |
|
|
2021
Q2 | $3.83M | Buy |
63,322
+5,695
| +10% | +$334K | 0.05% | 202 |
|
|
2021
Q1 | $3.08M | Buy |
57,627
+57,513
| +50,450% | +$2.9M | 0.04% | 195 |
|
|
2020
Q4 | $5K | Hold |
114
| – | – | ﹤0.01% | 638 |
|
|
2020
Q3 | $3K | Hold |
114
| – | – | ﹤0.01% | 624 |
|
|
2020
Q2 | $4K | Sell |
114
-3,660
| -97% | -$118K | ﹤0.01% | 621 |
|
|
2020
Q1 | $89K | Sell |
3,774
-12,445
| -77% | -$573K | ﹤0.01% | 370 |
|
|
2019
Q4 | $977K | Hold |
16,219
| – | – | 0.01% | 258 |
|
|
2019
Q3 | $985K | Sell |
16,219
-16,285
| -50% | -$858K | 0.02% | 259 |
|
|
2019
Q2 | $1.82M | Buy |
32,504
+11,410
| +54% | +$624K | 0.03% | 212 |
|
|
2019
Q1 | $1.26M | Sell |
21,094
-264
| -1% | -$16.6K | 0.02% | 256 |
|
|
2018
Q4 | $1.26M | Hold |
21,358
| – | – | 0.02% | 243 |
|
|
2018
Q3 | $1.71M | Sell |
21,358
-200
| -0.9% | -$15.8K | 0.02% | 262 |
|
|
2018
Q2 | $1.51M | Sell |
21,558
-117
| -0.5% | -$8.94K | 0.02% | 271 |
|
|
2018
Q1 | $1.58M | Sell |
21,675
-2,398
| -10% | -$165K | 0.02% | 271 |
|
|
2017
Q4 | $1.59M | Sell |
24,073
-416,450
| -95% | -$25.5M | 0.02% | 280 |
|
|
2017
Q3 | $24.7M | Sell |
440,523
-316,722
| -42% | -$17M | 0.3% | 92 |
|
|
2017
Q2 | $39.6M | Buy |
757,245
+204,234
| +37% | +$10.5M | 0.47% | 69 |
|
|
2017
Q1 | $27.9M | Sell |
553,011
-14,483
| -3% | -$721K | 0.33% | 88 |
|
|
2016
Q4 | $28.6M | Sell |
567,494
-459,051
| -45% | -$20.8M | 0.37% | 84 |
|
|
2016
Q3 | $41.7M | Sell |
1,026,545
-299,169
| -23% | -$12.1M | 0.65% | 47 |
|
|
2016
Q2 | $50.3M | Buy |
1,325,714
+386,271
| +41% | +$14.2M | 0.79% | 33 |
|
|
2016
Q1 | $34.9M | Buy |
939,443
+735,013
| +360% | +$27.9M | 0.57% | 64 |
|
|
2015
Q4 | $10.6M | Sell |
204,430
-6,522
| -3% | -$341K | 0.19% | 176 |
|
|
2015
Q3 | $9.77M | Buy |
210,952
+18,867
| +10% | +$971K | 0.18% | 190 |
|
|
2015
Q2 | $10M | Buy |
192,085
+1,625
| +0.9% | +$82.7K | 0.18% | 205 |
|
|
2015
Q1 | $9.75M | Sell |
190,460
-1,012
| -0.5% | -$48.6K | 0.17% | 208 |
|
|
2014
Q4 | $8.64M | Buy |
191,472
+191,424
| +398,800% | +$8.43M | 0.16% | 211 |
|
|
2014
Q3 | $2K | Hold |
48
| – | – | ﹤0.01% | 673 |
|
|
2014
Q2 | $2K | Hold |
48
| – | – | ﹤0.01% | 640 |
|
|
2014
Q1 | $2K | Sell |
48
-48
| -50% | -$2.1K | ﹤0.01% | 644 |
|
|
2013
Q4 | $4K | Hold |
96
| – | – | ﹤0.01% | 616 |
|
|
2013
Q3 | $3K | Hold |
96
| – | – | ﹤0.01% | 624 |
|
|
2013
Q2 | $3K | Buy |
+96
| New | +$3.83K | ﹤0.01% | 639 |
|
Other funds holding MPC
Thompson Siegel & Walmsley's MPC Position: Q2 2026 in Review
Thompson Siegel & Walmsley reduced its Marathon Petroleum (MPC) stake by 2.5% in Q2 2026, selling an estimated $117K and leaving 18,590 shares worth $4.75M. The position accounts for 0.09% of the portfolio, ranked #236.
Thompson Siegel & Walmsley first reported a position in MPC in Q2 2013 and has held it in 53 quarters since. The position peaked at $50.3M in Q2 2016. 1,942 funds tracked by Wall St. Rank hold MPC as of Q2 2026.
- Thompson Siegel & Walmsley held 18,590 shares of Marathon Petroleum worth $4.75M as of Q2 2026.
- Thompson Siegel & Walmsley sold 477 Marathon Petroleum shares in Q2 2026, an estimated $117K.
- Marathon Petroleum made up 0.09% of Thompson Siegel & Walmsley's portfolio in Q2 2026, its #236 holding.
- Thompson Siegel & Walmsley first reported a position in Marathon Petroleum in Q2 2013 and has held it in 53 quarters since.
- Thompson Siegel & Walmsley's Marathon Petroleum position peaked at $50.3M in Q2 2016.
- 1,942 funds tracked by Wall St. Rank held Marathon Petroleum as of Q2 2026.
Based on Thompson Siegel & Walmsley's 13F filing for Q2 2026, filed 11 Aug 2026.