Simplex Trading’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 | $63.9K | Sell |
7,200
-2,500
| -26% | -$29.3K | ﹤0.01% | 5592 |
|
|
2025
Q4 | $144K | Sell |
9,700
-1,800
| -16% | -$31.4K | ﹤0.01% | 4582 |
|
|
2025
Q3 | $221K | Buy |
11,500
+10,000
| +667% | +$160K | ﹤0.01% | 4824 |
|
|
2025
Q2 | $16K | Buy |
1,500
+1,415
| +1,665% | +$12.5K | ﹤0.01% | 6962 |
|
|
2025
Q1 | $1K | Sell |
85
-4,310
| -98% | -$67.5K | ﹤0.01% | 8241 |
|
|
2024
Q4 | $73K | Sell |
4,395
-1,010
| -19% | -$16.4K | ﹤0.01% | 5483 |
|
|
2024
Q3 | $102K | Sell |
5,405
-3,285
| -38% | -$66.6K | ﹤0.01% | 5211 |
|
|
2024
Q2 | $125K | Buy |
8,690
+5,140
| +145% | +$85.7K | ﹤0.01% | 5138 |
|
|
2024
Q1 | $54K | Buy |
3,550
+3,220
| +976% | +$69.4K | ﹤0.01% | 6193 |
|
|
2023
Q4 | $9K | Sell |
330
-2,895
| -90% | -$76K | ﹤0.01% | 7517 |
|
|
2023
Q3 | $153K | Sell |
3,225
-930
| -22% | -$71K | ﹤0.01% | 4643 |
|
|
2023
Q2 | $398K | Sell |
4,155
-1,485
| -26% | -$162K | ﹤0.01% | 3544 |
|
|
2023
Q1 | $639K | Buy |
5,640
+5,475
| +3,318% | +$592K | ﹤0.01% | 3028 |
|
|
2022
Q4 | $18K | Sell |
165
-3,025
| -95% | -$406K | ﹤0.01% | 6976 |
|
|
2022
Q3 | $409K | Buy |
3,190
+3,095
| +3,258% | +$317K | ﹤0.01% | 3698 |
|
|
2022
Q2 | $6K | Sell |
95
-135
| -59% | -$11.6K | ﹤0.01% | 8728 |
|
|
2022
Q1 | $32K | Sell |
230
-4,530
| -95% | -$697K | ﹤0.01% | 7700 |
|
|
2021
Q4 | $793K | Buy |
4,760
+3,830
| +412% | +$609K | ﹤0.01% | 3187 |
|
|
2021
Q3 | $420K | Sell |
930
-65
| -7% | -$12.7K | ﹤0.01% | 4359 |
|
|
2021
Q2 | $474K | Buy |
995
+993
| +49,650% | +$419K | ﹤0.01% | 4248 |
|
|
2021
Q1 | $92K | Hold |
2
| – | – | ﹤0.01% | 5868 |
|
|
2020
Q4 | $93K | Sell |
2
-18
| -90% | -$10.5K | ﹤0.01% | 5515 |
|
|
2020
Q3 | $1.15M | Buy |
20
+18
| +900% | +$5.99K | ﹤0.01% | 2072 |
|
|
2020
Q2 | $21K | Buy |
+2
| New | +$175 | ﹤0.01% | 6184 |
|
|
2019
Q4 | – | Sell |
-1
| Closed | -$4K | – | 7678 |
|
|
2019
Q3 | $4K | Sell |
1
-4
| -80% | -$264 | ﹤0.01% | 6697 |
|
|
2019
Q2 | $29K | Buy |
5
+4
| +400% | +$380 | ﹤0.01% | 5304 |
|
|
2019
Q1 | $7K | Buy |
+1
| New | +$122 | ﹤0.01% | 6345 |
|
|
2018
Q3 | – | Hold |
0
| – | -$5K | – | 7779 |
|
|
2018
Q2 | – | Hold |
0
| – | – | – | 6712 |
|
|
2018
Q1 | – | Sell |
-3
| Closed | -$3K | – | 6556 |
|
|
2017
Q4 | $3K | Sell |
3
-33
| -92% | -$6.78K | ﹤0.01% | 4924 |
|
|
2017
Q3 | $15K | Buy |
36
+34
| +1,700% | +$9.29K | ﹤0.01% | 3428 |
|
|
2017
Q2 | $4K | Buy |
2
+1
| +100% | +$205 | ﹤0.01% | 4783 |
|
|
2017
Q1 | $3K | Sell |
1
-1
| -50% | -$203 | ﹤0.01% | 5023 |
|
|
2016
Q4 | $4K | Sell |
2
-1
| -33% | -$218 | ﹤0.01% | 4548 |
|
|
2016
Q3 | $28K | Buy |
+3
| New | +$1.05K | ﹤0.01% | 2632 |
|
|
2015
Q4 | – | Hold |
0
| – | -$1K | – | 5818 |
|
|
2015
Q3 | – | Hold |
0
| – | – | – | 5064 |
|
Other funds holding MCRB
FP
VCM
VFT
Simplex Trading's MCRB Position: Q1 2026 in Review
Simplex Trading increased its Seres Therapeutics (MCRB) stake by 149% in Q1 2026, buying an estimated $21.5K and bringing the position to 3,070 shares worth $27.2K. The position accounts for ﹤0.01% of the portfolio, ranked #6489.
Simplex Trading first reported a position in MCRB in Q3 2015 and has held it in 25 quarters since. The position peaked at $1.4M in Q3 2021. 33 funds tracked by Wall St. Rank hold MCRB as of Q1 2026.
- Simplex Trading held 3,070 shares of Seres Therapeutics worth $27.2K as of Q1 2026.
- Simplex Trading bought 1,838 Seres Therapeutics shares in Q1 2026, an estimated $21.5K.
- Seres Therapeutics made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #6489 holding.
- Simplex Trading first reported a position in Seres Therapeutics in Q3 2015 and has held it in 25 quarters since.
- Simplex Trading's Seres Therapeutics position peaked at $1.4M in Q3 2021.
- 33 funds tracked by Wall St. Rank held Seres Therapeutics as of Q1 2026.
Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.