§ EQUITY
USDMCRB
SERES THERAPEUTICS INC
USD
§ 01 · PRICE
Price action
1D5D1M6MYTD1YMAX
§ 03 · SIGNAL STACK · WHAT THE INPUTS SAY
13F FLOW
19 increased/new, 14 decreased/exited (13F)
AC 13F Analysis
§ 05 · WHO OWNS IT
Top institutional holders
| Fund | Shares | % port | Δ Q/Q |
|---|---|---|---|
| Flagship Pioneering, LLC | 733K | 0.6% | ±0% |
| Flagship Pioneering, LLC | 423K | 0.3% | n/a |
| VANGUARD CAPITAL MANAGEMENT LLC | 294K | 0.0% | n/a |
| VANGUARD CAPITAL MANAGEMENT LLC | 294K | 0.0% | n/a |
| Vontobel Holding Ltd. | 138K | 0.0% | +34% |
| Marshall Wace LLP | 124K | 0.0% | +16% |
◇ AC INTELLIGENCE
Top institutional owners for MCRB as of the most recent 13F reporting period (Q1 2026 · Period ended Mar 31). Δ Q/Q reflects share-count change vs. the prior filing — positive green means adding, negative red means trimming. Cross-reference with the ownership-mix bars below to see which strategy cohort is driving the flow.
§ 06 · WHO OWNS IT · BY STRATEGY
OTHER73.2% · 16 holders
PASSIVE / INDEX7.8% · 4 holders
QUALITY / COMPOUNDER7.1% · 3 holders
SYSTEMATIC / QUANT6.9% · 2 holders
DEALER / BANK2.9% · 8 holders
TACTICAL / MACRO2.1% · 1 holder
◇ AC INTELLIGENCE
Ownership mix by behavioral cohort. Top bars indicate which style of capital dominates the float — passive indexing, quality compounders, dealer/bank, systematic quant, etc. Big quality-compounder share means concentrated active conviction; heavy passive share means flows are dictated by index rebalances, not fundamentals.
§ 07 · INSIDER ACTIVITY · LAST 180 DAYS
NO INSIDER FILINGS
◇ AC INTELLIGENCE
No Form 4 filings on record for MCRB in the last 180 days.
§ 08 · COVERAGE · OUR RECENT NOTES
No notes mention MCRB yet.