SERES THERAPEUTICS INC

$MCRB
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13F holders
30
Net 13F flow · Q
—
Insider buys · 90d
0
Insider net · 90d
—
Congress · 90d
0
Convergence
—

Institutional holders

Top 10 of 30 · Source: 13F-HR
01
Peak6 LLC
—
—
02
Minneapolis Portfolio Management Group, LLC
—
—
03
Brightline Capital Management, LLC
—
—
04
Kazazian Asset Management, LLC
—
—
05
Massachusetts Institute of Technology
—
—
06
Solus Alternative Asset Management LP
—
—
07
State Street
—
—
08
Axa S.a.
—
—
09
Strs Ohio
—
—
10
Mason Investment Advisory Services, Inc.
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—

Each fund name links to that filer's expert page. Share counts and per-fund weights are pending the 13F ingest fix (portfolios_expertholding.units is currently mis-populated — see the same caveat on the fund detail page's holdings table). Quarter-over-quarter delta ships with the metrics pipeline.

See all 30 13F holders · Pro →

Smart Money · top-200 alpha cohort

No exposure this quarter

No top-200 alpha managers currently hold $MCRB. The institutional holders table below shows the broader 13F picture.

Insider activity · last 90 days

4 transactions · 4 filers
18 May 2026
Shaff Eric D. —
▼ SOLD
259
$7.53
S
18 May 2026
DesRosier Thomas —
▼ SOLD
79
$7.53
S
18 May 2026
Brady Kelly —
▼ SOLD
59
$7.53
S
18 May 2026
Henn Matthew R —
▼ SOLD
77
$7.53
S

Transaction codes: P open-market purchase · S sale · M option exercise · A grant · F tax-withhold sale. Insider names link to each individual's expert page.

Congress trades · last 90 days

No Congress trades

No STOCK Act filings reference $MCRB in the recent window.

Convergence · Pattern Engine ships in v1.1

30-day window
In development

Convergence detection for $MCRB lands with the Pattern Engine.

Once the Pattern Engine ships, this section will surface every active convergence event involving $MCRB — the institutional managers and Congress members on the same name, the 30-day window, and the combined position size.

Source data: SEC EDGAR · 13F-HR · Form 4 · CapitolTrades · Last refreshed 12:41 UTC.