Stock Analysis
Data Source: SEC EDGAR 13F
Updated Hourly

Mbx Biosciences Inc (MBX)

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

Current Price
-- USD
Analyst Target
-- (0 analysts)
Upside
0.00%
Net Flow Q/Q
↑ +16
Streak
7Q ▲
Buyers last Q
54%

Smart Money Signals — MBX

Based on 154 hedge funds · latest filing: 2026 Q1 · updated quarterly

📈

Buying streak — 7 quarters in a row

last 6Q
For 7 consecutive quarters, more hedge funds added MBX than sold it. That's a consistent pattern of professional buying — not a one-time trade. When institutions keep buying quarter after quarter, it usually means they see a multi-year opportunity, not just a short-term momentum flip.
🏔️

At the ownership peak (100% of max)

100% of all-time peak
154 hedge funds hold MBX right now — the highest count in 3.0 years. When ownership is this concentrated, any bad news can trigger a chain reaction: one big fund sells, others follow. This is a classic 'crowded trade' — high popularity doesn't equal safety.
🚀

Fast accumulation — +95% more funds vs a year ago

fund count last 6Q
+75 new funds entered over the past year (+95% 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.
🟡

Slight buying edge — 54% buying

83 buying71 selling
Last quarter: 83 funds bought or added vs 71 that reduced or exited. It's nearly a 50/50 split — some institutions are convinced, others are taking profits. This mixed picture is normal near price highs.
➡️

Steady new buyers — ~38 new funds per quarter

new funds entering per quarter
Funds opening this position for the first time: 21 → 42 → 42 → 38. A stable flow of new institutional buyers suggests ongoing interest without signs of either acceleration or slowdown.
🔄

Mostly new holders — 48% entered in last year

■ 5% conviction (2yr+) ■ 47% medium ■ 48% new
Only 8 funds (5%) 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.
📈

Growing discovery — still being found

28 → 21 → 42 → 42 → 38 new funds/Q
New funds entering each quarter: 21 → 42 → 42 → 38. A growing number of institutions are discovering MBX each quarter. The narrative is still spreading — leaving room for ongoing capital accumulation.
🌱

Early stage — 63% of holders entered in last year

■ 6% veterans ■ 31% 1-2yr ■ 63% new
Of 158 current holders: 100 (63%) entered in the past year, only 9 (6%) 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.
✅

Strong quality — 22% AUM from major funds

22% from top-100 AUM funds
42 of 153 holders rank in the top 100 by AUM, accounting for 22% of total institutional value held. A meaningful share of the ownership value comes from the most well-resourced institutions.
5.2
out of 10
Moderate Exit Risk
Exit risk score 5.2/10 — 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 — MBX

In 2026 Q1, 83 hedge funds were net buyers of MBX (38 opened a new position, 45 added to an existing one), while 71 reduced or exited (49 trimmed, 22 sold completely) — a 54% buyer ratio, indicating a slight buying edge. This marks 7 consecutive quarters of net institutional buying — a persistent conviction signal. 22% of total institutional value in MBX is held by top-100 AUM funds, reflecting strong institutional quality. Net fund flow last quarter: +16 funds (more new holders than closures). Total institutional holders: 154.

Hedge Fund Ownership: MBX

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

Market Analysis: MBX

Analyst Price Targets

Avg. Price Target
--

Analyst Recommendations

Stock Performance

Real-time

Company Profile: MBX

-- --

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

Is It Too Late to Buy Mbx Biosciences Inc (MBX) Based on Hedge Fund 13F Filings?

Signal Freshness measures how much MBX 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 · 82d ago
MBX
+44.2%
XLV
+705.0%

MBX outperformed XLV by -660.8% since March 31, 2026.

Since 13F Filing Date May 15, 2026 · 37d ago
MBX
+32.6%
XLV
+691.9%

Since the filing became public, MBX outperformed XLV by -659.3% .

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.

20 top-rated funds 6 high-conviction
Consensus
5.7
/ 10
breadth
×
Elite
4.5
/ 10
conviction
Hedge Fund Positioning: MBX
153 + Investors

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

Metric All 13F Filers (2026 Q1) Prior (2025 Q4) Change
Funds Holding 153 138 10.87%
13F Shares 53M 49M 7.37%
Total Value $1.54B $1.52B 1.29%
New Positions 37 42 -5
Increased Positions 43 53 -10
Closed Positions 22 25 -3
Reduced Positions 48 28 +20
Total Calls 3 4 -25.0%
Total Puts 2 3 -33.33%
PUT/CALL Ratio 0.67 0.75 Bullish

Statistics: MBX

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Beta (5Y Monthly) --
Short Ratio (Days to Cover) --
Short % of Float --

Financial Highlights

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Institutional Holders (2026 Q1)

153 + investors

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

QUARTER:
Top 25 MBX holders by conviction (% of portfolio weight) — 2026 Q1 · Source: SEC Form 13F
# Investor % of Portfolio Shares Mkt Value
1 NVP Associates, LLC 36.20% 2,136,335 $63.8M
2 NEA Management Company, LLC 6.13% 3,614,486 $107.9M
3 Frazier Life Sciences Management, L.P. 5.11% 6,652,013 $198.6M
4 Stempoint Capital LP 2.90% 499,469 $14.9M
5 KVP Capital Advisors, LP 2.71% 121,524 $3.6M
6 Parkman Healthcare Partners LLC 2.46% 800,037 $23.9M
7 Orbimed Advisors LLC 2.15% 3,637,887 $108.6M
8 Aaron Wealth Advisors LLC 1.98% 1,168,176 $34.9M
9 Elmind Capital, LP 1.79% 211,000 $6.3M
10 Kynam Capital Management, LP 1.72% 934,799 $27.9M
11 Caligan Partners LP 1.69% 848,590 $25.3M
12 Cormorant Asset Management, LP 1.68% 1,120,000 $33.4M
13 Braidwell LP 1.49% 1,492,467 $44.6M
14 Deep Track Capital, LP 1.34% 2,757,569 $82.3M
15 DAFNA Capital Management LLC 1.19% 175,465 $5.2M
16 Opaleye Management Inc. 1.02% 260,000 $7.8M
17 EcoR1 Capital, LLC 0.98% 777,000 $23.2M
18 Tetragon Partners GP Ltd 0.84% 145,480 $4.3M
19 TCG Crossover Management, LLC 0.56% 650,000 $19.4M
20 Rock Springs Capital Management LP 0.51% 287,967 $8.6M
21 Eventide Asset Management, LLC 0.44% 890,000 $26.6M
22 Koa Wealth Management, LLC 0.39% 17,913 $535K
23 Platinum Investment Management Ltd 0.33% 43,597 $1.3M
24 Goelzer Investment Management, Inc. 0.24% 164,172 $4.9M
25 Affinity Asset Advisors, LLC 0.23% 150,000 $4.5M
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 — Mbx Biosciences Inc (MBX)

What does the Smart Money Trend signal show for MBX?

Buying streak — 7 quarters in a row: For 7 consecutive quarters, more hedge funds added MBX than sold it. That's a consistent pattern of professional buying — not a one-time trade. When institutions keep buying quarter after quarter, it usually means they see a multi-year opportunity, not just a short-term momentum flip.

What is the institutional breadth score for MBX?

Slight buying edge — 54% buying: Last quarter: 83 funds bought or added vs 71 that reduced or exited. It's nearly a 50/50 split — some institutions are convinced, others are taking profits. This mixed picture is normal near price highs.

What is the fund quality score for MBX holders?

Strong quality — 22% AUM from major funds: 42 of 153 holders rank in the top 100 by AUM, accounting for 22% of total institutional value held. A meaningful share of the ownership value comes from the most well-resourced institutions.

How long have hedge funds held MBX?

Mostly new holders — 48% entered in last year: Only 8 funds (5%) 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 Mbx Biosciences Inc (MBX) following the 2026 Q1 hedge fund 13F filings?

As of today, MBX has moved +32.6% since the 2026 Q1 13F filing date (May 15, 2026), compared to +691.9% for the XLV sector ETF — an outperformance of -659.3%. Since the quarter end (March 31, 2026), MBX has gained +44.2% vs +705.0% 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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