SUSQUEHANNA INTERNATIONAL GROUP, LLP MCRB — SERES THERAPEUTICS INC

Ownership history in SUSQUEHANNA INTERNATIONAL GROUP, LLP  ·  11 quarters on record

AI Ownership Summary

SUSQUEHANNA INTERNATIONAL GROUP, LLP reported SERES THERAPEUTICS INC (MCRB) in 11 quarterly 13F filings from 2025 Q2 through 2026 Q1. The latest visible filing shows MCRB at 0.00% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings.

What this MCRB ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was SUSQUEHANNA INTERNATIONAL GROUP, LLP's position in SERES THERAPEUTICS INC, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2026 Q1

MCRB was reported at 0.00% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.0% in 2025 Q3

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2025 Q2 to 2026 Q1

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

MCRB stock page SUSQUEHANNA INTERNATIONAL GROUP, LLP fund profile SUSQUEHANNA INTERNATIONAL GROUP, LLP full holdings
How SUSQUEHANNA INTERNATIONAL GROUP, LLP held MCRB — position size vs. price
% of Fund (quarterly)    MCRB price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 11 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 ADDED — — — 105,339 +40,439 +62.3% 0.00% $934K 2026-05-15 $7.64
2026 Q1 ADDED — — — 64,900 +8,200 +14.5% 0.00% $576K 2026-05-15 $7.64
2026 Q1 REDUCED 68.5% -12.2% ✅ 56,700 -123,229 -68.5% 0.00% $503K 2026-05-15 $7.64
2025 Q4 ADDED — — — 179,929 +95,729 +113.7% 0.00% $2.7M 2026-02-17 $8.28
2025 Q4 ADDED — — — 84,200 +15,500 +22.6% 0.00% $1.3M 2026-02-17 $8.28
2025 Q4 REDUCED 10.3% -40.4% ✅ 68,700 -7,900 -10.3% 0.00% $1.0M 2026-02-17 $8.28
2025 Q3 REDUCED 75.8% -22.4% ✅ 76,600 -239,700 -75.8% 0.00% $1.5M 2025-11-14 $16.66
2025 Q3 ADDED — — — 316,300 +304,616 +2607.1% 0.00% $6.1M 2025-11-14 $16.66
2025 Q2 REDUCED 32.5% +68.2% ❌ 11,684 -5,616 -32.5% 0.00% $130K 2025-08-14 $16.86
2025 Q2 REDUCED 79.2% +68.2% ❌ 17,300 -65,900 -79.2% 0.00% $192K 2025-08-14 $16.86
2025 Q2 INITIATED — — — 83,200 — — 0.00% $924K 2025-08-14 $16.86

🏢 Other funds also holding MCRB

As of 2026 Q2 — sorted by position size

Rachor Investment Advisory Services, LLC 0.01% SBI Securities Co., Ltd. 0.0%

FAQ About SUSQUEHANNA INTERNATIONAL GROUP, LLP and MCRB

These are the practical questions this page is built to answer before you even open the full history table.

How long has SUSQUEHANNA INTERNATIONAL GROUP, LLP reported owning MCRB?

SUSQUEHANNA INTERNATIONAL GROUP, LLP reported MCRB across 11 quarterly 13F filings, from 2025 Q2 through 2026 Q1.

What was the largest reported MCRB position in SUSQUEHANNA INTERNATIONAL GROUP, LLP's portfolio?

The largest reported portfolio weight for MCRB was 0.00% in 2025 Q3.

What is the latest reported MCRB position on this page?

The most recent filing on this page is 2026 Q1, when SUSQUEHANNA INTERNATIONAL GROUP, LLP reported 105,339 shares, equal to 0.00% of portfolio, with an estimated market value of $934K.

What does the chart on this MCRB ownership page compare?

The chart compares SUSQUEHANNA INTERNATIONAL GROUP, LLP's quarterly MCRB portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

How well did SUSQUEHANNA INTERNATIONAL GROUP, LLP time their MCRB position?

Based on 13F filing dates vs. subsequent MCRB price moves, SUSQUEHANNA INTERNATIONAL GROUP, LLP correctly timed 5 out of 10 reported position changes (50%). The annualised alpha on MCRB relative to SPY over the holding period was -71.3%.

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