Fidelity Investments’s Seres Therapeutics MCRB Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
$15.5K Buy
1,752
+12
+0.7% +$141 ﹤0.01% 4615
2025
Q4
$25.9K Sell
1,740
-142
-8% -$2.48K ﹤0.01% 4367
2025
Q3
$36.2K Sell
1,882
-266,822
-99% -$4.26M ﹤0.01% 4108
2025
Q2
$2.99M Sell
268,704
-825,768
-75% -$7.27M ﹤0.01% 2346
2025
Q1
$15.3M Buy
1,094,472
+3,887
+0.4% +$60.9K ﹤0.01% 1770
2024
Q4
$18.1M Sell
1,090,585
-52,278
-5% -$850K ﹤0.01% 1761
2024
Q3
$21.6M Buy
1,142,863
+7,005
+0.6% +$142K ﹤0.01% 1683
2024
Q2
$16.4M Buy
1,135,858
+3,287
+0.3% +$54.8K ﹤0.01% 1713
2024
Q1
$17.5M Buy
1,132,571
+163,142
+17% +$3.52M ﹤0.01% 1703
2023
Q4
$27.1M Buy
969,429
+7,894
+0.8% +$207K ﹤0.01% 1510
2023
Q3
$45.8M Buy
961,535
+2,275
+0.2% +$174K ﹤0.01% 1273
2023
Q2
$91.9M Buy
959,260
+13,687
+1% +$1.49M 0.01% 1031
2023
Q1
$107M Buy
945,573
+11,135
+1% +$1.2M 0.01% 953
2022
Q4
$105M Buy
934,438
+3,901
+0.4% +$523K 0.01% 953
2022
Q3
$119M Buy
930,537
+476
+0.1% +$48.8K 0.01% 894
2022
Q2
$63.8M Buy
930,061
+236,168
+34% +$20.3M 0.01% 1155
2022
Q1
$98.8M Buy
693,893
+5,039
+0.7% +$775K 0.01% 1066
2021
Q4
$115M Buy
688,854
+965
+0.1% +$153K 0.01% 1042
2021
Q3
$95.8M Buy
687,889
+41,935
+6% +$8.21M 0.01% 1123
2021
Q2
$308M Buy
645,954
+31,920
+5% +$13.5M 0.02% 643
2021
Q1
$253M Buy
614,034
+47,205
+8% +$21.7M 0.02% 683
2020
Q4
$278M Buy
566,829
+30,959
+6% +$18.1M 0.02% 613
2020
Q3
$303M Buy
535,870
+248,766
+87% +$82.7M 0.03% 470
2020
Q2
$27.3M Sell
287,104
-20,383
-7% -$1.79M ﹤0.01% 1425
2020
Q1
$22M Sell
307,487
-17,469
-5% -$1.17M ﹤0.01% 1364
2019
Q4
$22.4M Sell
324,956
-32,486
-9% -$2.41M ﹤0.01% 1552
2019
Q3
$28.7M Sell
357,442
-47,655
-12% -$3.15M ﹤0.01% 1431
2019
Q2
$26.1M Buy
405,097
+113,990
+39% +$10.8M ﹤0.01% 1516
2019
Q1
$40M Sell
291,107
-15,312
-5% -$1.87M ﹤0.01% 1303
2018
Q4
$27.7M Buy
306,419
+452
+0.1% +$63.3K ﹤0.01% 1424
2018
Q3
$46.4M Buy
305,967
+1,187
+0.4% +$192K 0.01% 1307
2018
Q2
$52.4M Buy
304,780
+32
+0% +$5.23K 0.01% 1257
2018
Q1
$44.7M Buy
304,748
+887
+0.3% +$170K 0.01% 1348
2017
Q4
$61.6M Buy
303,861
+131
+0% +$26.9K 0.01% 1200
2017
Q3
$97.4M Buy
303,730
+915
+0.3% +$250K 0.01% 985
2017
Q2
$68.4M Buy
302,815
+169
+0.1% +$34.7K 0.01% 1148
2017
Q1
$68.2M Buy
302,646
+93
+0% +$18.9K 0.01% 1149
2016
Q4
$59.9M Buy
302,553
+609
+0.2% +$133K 0.01% 1214
2016
Q3
$74.2M Buy
301,944
+5,545
+2% +$1.95M 0.01% 1122
2016
Q2
$172M Buy
296,399
+2,496
+0.8% +$1.46M 0.02% 735
2016
Q1
$156M Buy
293,903
+985
+0.3% +$514K 0.02% 771
2015
Q4
$206M Buy
292,918
+691
+0.2% +$454K 0.03% 644
2015
Q3
$173M Buy
292,227
+30,304
+12% +$24.7M 0.02% 701
2015
Q2
$217M Buy
+261,923
New +$229M 0.03% 656

Other funds holding MCRB

Fidelity Investments's MCRB Position: Q1 2026 in Review

Fidelity Investments increased its Seres Therapeutics (MCRB) stake by 0.69% in Q1 2026, buying an estimated $141 and bringing the position to 1,752 shares worth $15.5K. The position accounts for ﹤0.01% of the portfolio, ranked #4615.

Fidelity Investments first reported a position in MCRB in Q2 2015 and has held it in 44 quarters since. The position peaked at $308M in Q2 2021. 33 funds tracked by Wall St. Rank hold MCRB as of Q1 2026.

  • Fidelity Investments held 1,752 shares of Seres Therapeutics worth $15.5K as of Q1 2026.
  • Fidelity Investments bought 12 Seres Therapeutics shares in Q1 2026, an estimated $141.
  • Seres Therapeutics made up ﹤0.01% of Fidelity Investments's portfolio in Q1 2026, its #4615 holding.
  • Fidelity Investments first reported a position in Seres Therapeutics in Q2 2015 and has held it in 44 quarters since.
  • Fidelity Investments's Seres Therapeutics position peaked at $308M in Q2 2021.
  • 33 funds tracked by Wall St. Rank held Seres Therapeutics as of Q1 2026.

Based on Fidelity Investments's 13F filing for Q1 2026, filed 15 May 2026.