Q32 Bio Inc.· QTTB

🇺🇸 US · MicroBroad USNASDAQ

HealthcareBiotechnologyWebsite

Price: $16.16
Day: +6.53%
Mkt Cap: $206.40M
52W Range: $1.57 – $23.57
Volume: 724.6K
Beta: -0.33

D55D FrameworkQuarterly Data

Holdings Analysis

Insider activity, institutional flows, and fund ownership.

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Q32 Bio Inc.

QTTB|Healthcare|Biotechnology

Current price: $16

Smart Money

Dimension 5 of 5

Insider Activity, Q2 2026

Latest scored quarter, net flow, and top transactions by value

Net dollar flow$30.0M

Net share flow+3.8M

Purchases4 ($30.0M)

Sales0 ($0)

Top Notable Transactions

Insider

Type

Value

Date

ORBIMED ADVISORS LLC

Purchase

$10.0M

May 28

Xu Diyong

Purchase

$10.0M

May 28

ORBIMED ADVISORS LLC

Purchase

$5.0M

May 28

Institutional Ownership, Q1 2025

Ownership share, position changes, share flow, and top holders

Ownership77.1%

13F share flow-143.7%

Investors holding73

+36 adding-49 reducing

New 10Inc 26Red 20Closed 29

Top Institutional Holders

No institutional data

ETF & Mutual Fund Activity, Q2 2026

Latest meaningful quarter: fund-by-fund buying / unchanged / selling

Funds reporting33

Total shares held1.1M

Share flow+10.9%

5 buying1 selling

Buying 5Unchanged 27Selling 1

Top Fund Holders

Fund

Weight

Change

FIDELITY SELECT PORTFOLIOS

259.9K

0.47%

AMERICAN CENTURY ETF TRUST

128.8K

0.05%

+127.8K

FIDELITY CONCORD STREET TRUST

70.5K

0.03%

-23.6K

FIDELITY SALEM STREET TRUST

67.6K

0.00%

See the complete picture

The full 5D Framework: Business Quality · Peer Comparison · Valuation · Analyst Sentiment · Smart Money

Explore QTTB on stockoscope.com→

Generated August 6, 2026

For educational purposes only. Not financial advice. Data may be delayed or incomplete.

Smart Money Sentiment

QTTB Smart Money Sentiment Score

A weighted 1-5 sentiment score across three smart money signals.

Smart Money

3.2/5

Neutral

Weighted across 3 components

Component Breakdown (3 of 3 available)

Insider Activity

40% weight

+77

Institutional Flow

50% weight

-64

Fund Flow

10% weight

+100

Overall Smart Money sentiment of 3.2/5 (Neutral) based on a weighted combination of 3 components. Insider activity uses a relative-baseline comparison against the stock's own history; institutional flow tracks position momentum and 13F share changes; fund flow measures ETF / mutual-fund buying vs selling. Higher scores indicate stronger bullish sentiment from professional investors.Last updated August 5, 2026.

Insider Trading Activity

Insider trading analysis comparing the latest quarter against the stock's own historical baseline.

Insider Activity for QTTB

Net insider share flow by quarter (C-suite & director purchases minus sales)

Very Bullish

Strong insider buying in Q2 2026

Major: 4 purchases totaling $30.0M (3.8M shares)

No prior buying history, this is a new signal

Buying is rare, only seen in 1 of 7 quarters

Notable Recent Transactions, QTTB

Top 8 highest-value recent insider trades

ORBIMED ADVISORS LLC

Director

Buy

1,250,000 shares at $8.00

May 28, 2026$10.00M

Xu Diyong

Director

Buy

1,250,000 shares at $8.00

May 28, 2026$10.00M

ORBIMED ADVISORS LLC

Director

Buy

625,000 shares at $8.00

May 28, 2026$5.00M

Xu Diyong

Director

Buy

625,000 shares at $8.00

May 28, 2026$5.00M

Morrison Jodie Pope

CEO

Sell

22,506 shares at $3.46

Dec 2, 2025$77.87K

Morrison Jodie Pope

CEO

Sell

9,896 shares at $4.51

Feb 25, 2026$44.67K

Kalowski Lee

CFO

Sell

9,072 shares at $3.46

Dec 2, 2025$31.40K

Morrison Jodie Pope

CEO

Sell

10,494 shares at $1.80

Aug 26, 2025$18.90K

Institutional Ownership Analysis

Institutional ownership analysis with position momentum, 13F share flow, and ownership percentage trends.

Institutional Ownership Over Time for QTTB

Total dollar value invested by institutions each quarter

Very Bearish

Institutions reducing exposure in Q1 2025

77.1% institutional ownership

Slight distribution: 49 reducing vs 36 adding

13F shares decreased by 16.9%, a significant shift

Momentum weakening from prior quarter

Position Changes

Q1 2026: how are institutions adjusting their positions?

+38 growing-18 shrinkingNet: +20

New (12)

Increased (26)

Reduced (8)

Closed (10)

Top Institutional Holders, QTTB

Largest 8 institutional positions by ownership percentage as of Q1 2026

ORBIMED ADVISORS LLC

2.3M

$14.5M

Ownership

18.32%

-0.5%

ATLAS VENTURE LIFE SCIENCE ADVISORS, LLC

2.1M

$13.4M

Ownership

17.01%

-0.5%

OPALEYE MANAGEMENT INC.

1.3M

$8.1M

Ownership

10.21%

+485.9%

CARLYLE GROUP INC.

1.1M

$7.1M

Ownership

8.96%

-0.5%

ARCH VENTURE MANAGEMENT, LLC

320.5K

$2.1M

Ownership

2.61%

-0.5%

ACORN CAPITAL ADVISORS, LLC

315.1K

$2.0M

Ownership

2.56%

-36.5%

MACKENZIE FINANCIAL CORP

246.3K

$1.6M

Ownership

2.00%

+100.0%

SANOFI

244.1K

$1.6M

Ownership

1.98%

-0.5%

ETF and Mutual Fund Holdings

ETF and mutual fund activity breakdown showing buying vs selling funds, top fund holders, and detailed holdings.

Fund Activity

Q2 2026: 33 ETFs and mutual funds reporting

5 buying1 sellingNet: +4

Buying (5)

Unchanged (27)

Selling (1)

Very Bullish

Funds accumulating in Q2 2026

33 ETFs and mutual funds reporting

5 funds buying vs 1 selling

Top Fund Holders, QTTB

Largest 8 ETF and mutual fund positions by shares held as of latest filing

FIDELITY SELECT PORTFOLIOS

259.9K

Weight

0.47%

No change

AMERICAN CENTURY ETF TRUST

128.8K

Weight

0.05%

Increased

FIDELITY CONCORD STREET TRUST

70.5K

Weight

0.03%

Decreased

FIDELITY SALEM STREET TRUST

67.6K

Weight

0.00%

No change

VANGUARD SCOTTSDALE FUNDS

34.1K

Weight

0.00%

No change

iSHARES TRUST

25.0K

Weight

0.00%

No change

SCHWAB CAPITAL TRUST

14.2K

Weight

0.03%

No change

VALIC Co I

5.2K

Weight

0.00%

No change

Q32 Bio Inc.· QTTB

Holdings Analysis

Insider Trading Activity

1.3Transaction History15Real market purchases and sales onlyShow All Types

Institutional Ownership Analysis

2.4Detailed Holdings24Most recent institutional positions with changes and valuations

ETF and Mutual Fund Holdings

3.3Fund Holdings Details25Most recent ETF and mutual fund holdings with share counts and weights

Search stocks

Holdings Analysis

Insider Trading Activity

1.3Transaction History15Real market purchases and sales onlyShow All Types

Institutional Ownership Analysis

2.4Detailed Holdings24Most recent institutional positions with changes and valuations

ETF and Mutual Fund Holdings

3.3Fund Holdings Details25Most recent ETF and mutual fund holdings with share counts and weights