Stock Analysis
Data Source: SEC EDGAR 13F
Updated Hourly

Seres Therapeutics Inc (MCRB)

33 + Investors. Track Smart Money conviction in MCRB. See who's accumulating, reducing, or initiating positions.

Current Price
-- USD
Analyst Target
-- (0 analysts)
Upside
0.00%
Net Flow Q/Q
↓ -4
Streak
2Q ▼
Buyers last Q
48%

Smart Money Signals — MCRB

Based on 33 hedge funds · latest filing: 2026 Q1 · updated quarterly

📉

Selling streak — 2 quarters in a row

last 6Q
For 2 consecutive quarters, more hedge funds reduced or closed their MCRB positions than added to them. Sustained institutional selling is a meaningful warning sign — these are professionals with deep research teams collectively deciding to exit.
📊

High ownership — 87% of 3.0Y peak

87% of all-time peak
33 funds currently hold this stock — 87% of the 3.0-year high of 38 funds (reached 2025 Q3). Ownership is elevated but not yet at maximum concentration. Room to grow, but watch if the trend reverses.
🚀

Fast accumulation — +725% more funds vs a year ago

fund count last 6Q
+29 new funds entered over the past year (+725% YoY). That's a rapid rush of institutional money. Fast accumulation often signals a major thesis — but it also means the stock could fall quickly if that thesis breaks.
🟠

More sellers than buyers — 48% buying

16 buying17 selling
Last quarter: 17 funds reduced or exited vs 16 that bought or added. When more than half of active funds are selling, it's a caution flag — especially if the stock price hasn't moved down yet.
➡️

Steady new buyers — ~5 new funds per quarter

new funds entering per quarter
Funds opening this position for the first time: 33 → 14 → 8 → 5. A stable flow of new institutional buyers suggests ongoing interest without signs of either acceleration or slowdown.
🔄

Mostly new holders — 42% entered in last year

■ 6% conviction (2yr+) ■ 52% medium ■ 42% new
Only 2 funds (6%) have held >2 years. The majority of current holders are relatively new to the position. New holders tend to sell faster when prices drop — a shallow conviction base that could amplify any sell-off.
💎

Buying through price weakness — shares -9%, value -46%

Value
-46%
Shares
-9%
Last quarter: funds added -9% more shares while total portfolio value only changed -46%. Institutions were buying while the price was falling — a high-conviction accumulation signal. They're deliberately loading up on the dip.
⚠️

Saturation — most institutions already know this story

4 → 33 → 14 → 8 → 5 new funds/Q
New funds entering each quarter: 33 → 14 → 8 → 5. Far fewer institutions are entering now vs. a year ago. When the pool of potential new buyers shrinks this fast, future price support from institutional inflows weakens significantly.
🌱

Early stage — 97% of holders entered in last year

■ 3% veterans ■ 0% 1-2yr ■ 97% new
Of 35 current holders: 34 (97%) entered in the past year, only 1 (3%) are 2+ year veterans. This is an early-phase institutional idea — still being discovered. High upside potential if the thesis plays out, but thin conviction base.
📋

Smaller funds dominant — 16% AUM from top-100

16% from top-100 AUM funds
15 of 32 holders rank in the top 100 by AUM, but together hold only 16% of total institutional value. The stock is held primarily by smaller and mid-sized funds.
4.3
out of 10
Moderate Exit Risk
Exit risk score 4.3/10 — some crowding factors present, but no critical concentration. Watch ownership trend over the next 1–2 quarters for direction.

Methodology note: these Smart Money cards use consecutive 13F disclosure snapshots, not trade-by-trade execution data. "Buying", "selling", "new holders", and "trimmed" refer to quarter-over-quarter changes in reported holders, aggregate shares, or disclosed position values between filings. They are useful for ownership regime analysis and crowding, but they do not imply exact trade timing on the filing date.

Institutional Sentiment Summary — MCRB

In 2026 Q1, 16 hedge funds were net buyers of MCRB (5 opened a new position, 11 added to an existing one), while 17 reduced or exited (8 trimmed, 9 sold completely) — a 48% buyer ratio, indicating roughly balanced activity. Net selling has persisted for two consecutive quarters. Net fund flow last quarter: -4 funds (more exits than new entries). Total institutional holders: 33.

Hedge Fund Ownership: MCRB

How many hedge funds hold MCRB — quarterly history vs. share price
Quarterly hedge fund ownership of MCRB vs. share price

Market Analysis: MCRB

Analyst Price Targets

Avg. Price Target
--

Analyst Recommendations

Stock Performance

Real-time

Company Profile: MCRB

-- --

Institutional ownership data sourced from SEC EDGAR Form 13F-HR filings.

Is It Too Late to Buy Seres Therapeutics Inc (MCRB) Based on Hedge Fund 13F Filings?

Signal Freshness measures how much MCRB has moved relative to its sector benchmark (XLV) since the 2026 Q1 13F filing. A stock that has barely outrun its sector is still a relatively fresh entry point — the fund's thesis has not yet been priced in by the broader market.

Since Quarter End March 31, 2026 · 77d ago
MCRB
-32.7%
XLV
+4.3%

MCRB outperformed XLV by -37.0% since March 31, 2026.

Since 13F Filing Date May 15, 2026 · 32d ago
MCRB
-21.9%
XLV
+5.4%

Since the filing became public, MCRB outperformed XLV by -27.3% .

Interpretation: The stock is tracking its sector benchmark closely. The signal remains fresh and the entry point is still near the fund's implied reference. Learn more →

Smart Money Signal ?
Limited Smart Money Interest

No strong consensus or elite conviction detected among institutional holders.

4 top-rated funds 1 high-conviction
Consensus
3.0
/ 10
breadth
×
Elite
0.7
/ 10
conviction
Hedge Fund Positioning: MCRB
33 + Investors

Track Smart Money conviction in MCRB. See who's accumulating, reducing, or initiating positions.

Metric All 13F Filers (2026 Q1) Prior (2025 Q4) Change
Funds Holding 33 37 -10.81%
13F Shares 2M 3M -9.36%
Total Value $22M $41M -46.02%
New Positions 5 8 -3
Increased Positions 9 13 -4
Closed Positions 9 9 -
Reduced Positions 9 9 -
Total Calls 1 3 -66.67%
Total Puts 2 2 -
PUT/CALL Ratio 2.0 0.67 Bearish

Statistics: MCRB

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Valuation Measures Data as of: --

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PEG Ratio (5yr expected) --
Price/Sales (ttm) --
Price/Book (mrq) --
Enterprise Value/Revenue --
Enterprise Value/EBITDA --
Beta (5Y Monthly) --
Short Ratio (Days to Cover) --
Short % of Float --

Financial Highlights

Profitability
Profit Margin --
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Total Cash (mrq) --
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Institutional Holders (2026 Q1)

33 + investors

Explore institutional interest and hedge fund ownership dynamics. Analyze portfolio weights, new positions, and conviction trends in MCRB. Verified SEC 13F-HR filings.

QUARTER:
Top 25 MCRB holders by conviction (% of portfolio weight) — 2026 Q1 · Source: SEC Form 13F
# Investor % of Portfolio Shares Mkt Value
1 Lion Point Capital, LP 1.67% 31,570 $280K
2 Flagship Pioneering, LLC 0.88% 1,155,850 $10.3M
3 Rachor Investment Advisory Services, LLC 0.01% 1,477 $13K
4 Vontobel Holding Ltd. 0.00% 138,468 $1.2M
5 Marshall Wace, LLP 0.00% 139,539 $1.2M
6 SBI Securities Co., Ltd. 0.00% 3,482 $31K
7 American Century Companies Inc 0.00% 62,316 $553K
8 Tower Research Capital LLC (TRC) 0.00% 794 $7K
9 Physician Wealth Advisors, Inc. 0.00% 142 $1K
10 Two Sigma Investments, LP 0.00% 18,794 $167K
11 Susquehanna International Group, LLP 0.00% 105,339 $934K
12 Vanguard Fiduciary Trust Co 0.00% 39,643 $352K
13 Citadel Advisors LLC 0.00% 59,500 $528K
14 Vanguard Capital Management LLC 0.00% 294,143 $2.6M
15 Susquehanna International Group, LLP 0.00% 64,900 $576K
16 Susquehanna International Group, LLP 0.00% 56,700 $503K
17 Simplex Trading, LLC 0.00% 3,070 $27K
18 BlackRock, Inc. 0.00% 102,026 $905K
19 Group One Trading LLC 0.00% 824 $7K
20 Barclays plc 0.00% 6,507 $58K
21 Morgan Stanley 0.00% 21,700 $192K
22 UBS Group AG 0.00% 7,030 $62K
23 Sound Income Strategies, LLC 0.00% 8 —
24 BNP Paribas Financial Markets 0.00% 211 $2K
25 Fmr LLC 0.00% 1,752 $16K
Investor Ownership
History 		% of Portfolio Prev % Rank Conviction Avg Buy Price 13F Score™ 3Y / 7Y Sell Timing Shares Mkt Value Change Change % Source Quarter Filed

Frequently Asked Questions — Seres Therapeutics Inc (MCRB)

What does the Smart Money Trend signal show for MCRB?

Selling streak — 2 quarters in a row: For 2 consecutive quarters, more hedge funds reduced or closed their MCRB positions than added to them. Sustained institutional selling is a meaningful warning sign — these are professionals with deep research teams collectively deciding to exit.

What is the institutional breadth score for MCRB?

More sellers than buyers — 48% buying: Last quarter: 17 funds reduced or exited vs 16 that bought or added. When more than half of active funds are selling, it's a caution flag — especially if the stock price hasn't moved down yet.

What is the fund quality score for MCRB holders?

Smaller funds dominant — 16% AUM from top-100: 15 of 32 holders rank in the top 100 by AUM, but together hold only 16% of total institutional value. The stock is held primarily by smaller and mid-sized funds.

How long have hedge funds held MCRB?

Mostly new holders — 42% entered in last year: Only 2 funds (6%) have held >2 years. The majority of current holders are relatively new to the position. New holders tend to sell faster when prices drop — a shallow conviction base that could amplify any sell-off.

Is it too late to buy Seres Therapeutics Inc (MCRB) following the 2026 Q1 hedge fund 13F filings?

As of today, MCRB has moved -21.9% since the 2026 Q1 13F filing date (May 15, 2026), compared to +5.4% for the XLV sector ETF — an outperformance of -27.3%. Since the quarter end (March 31, 2026), MCRB has gained -32.7% vs +4.3% for XLV. The stock is tracking its sector benchmark closely. The signal remains fresh and the entry point is still near the fund's implied reference.

Where does this institutional ownership data come from?

All holdings data is sourced from SEC Form 13F filings, which institutional investment managers with over $100 million in assets are required to submit quarterly. Data is parsed directly from SEC EDGAR.

Disclaimer: The information on this page is for informational purposes only and does not constitute investment advice, a recommendation, or an offer to buy or sell any security. Institutional holdings data is sourced from SEC Form 13F filings and reflects positions as of the filing date. Past performance of any fund or portfolio is not indicative of future results. 13Foresight is not a registered investment adviser. Always conduct your own due diligence before making investment decisions.

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