Pacific Biosciences of California, Inc.· PACB

🇺🇸 US · MicroBroad USNASDAQ

Healthcare Medical - Devices Website

Price: $1.38
Day: +2.99%
Mkt Cap: $428.63M
52W Range: $1.07 – $2.73
Volume: 6.23M
Beta: 2.31

D55D FrameworkQuarterly Data

Holdings Analysis

Insider activity, institutional flows, and fund ownership.

Smart Money: 3.3 / 5 (Neutral), from 3 of 3 components
Institutions Q2 2026: 229 institutions hold; 93 added, 78 reduced
Insiders Q3 2026: no purchases, 1 sale ($30.4K)

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Pacific Biosciences of California, Inc.

PACB|Healthcare|Medical - Devices

Current price: $1

Smart Money

Dimension 5 of 5

Insider selling pace · Q3 2026

0.1x

quarter in progress, filings still arriving

Seller breadth · Q3 2026

1 seller

vs 1.8 avg per quarter

Institutional net breadth · Q2 2026

118 adding vs 111 reducing

Institutional ownership · Q2 2026

62.4%

229 institutions

Insider Selling Pace

Each quarter's selling vs this stock's own trailing 6-quarter average

Light <0.5xRoutineElevated >1.5xHeavy >3xBuying

Institutional Positions

Institutions adding above the line, reducing below, net as a line

NewIncreasedReducedClosedNet

Largest Institutional Holders, Q2 2026

By reported market value, and how each moved in the quarter

Holder

Change

BLACKROCK, INC.

32.3M

+26.0%

ARK INVESTMENT MANAGEMENT LLC

29.8M

-19.2%

SOFTBANK GROUP CORP.

20.5M

-1.6%

VANGUARD CAPITAL MANAGEMENT LLC

13.4M

+3.2%

GEODE CAPITAL MANAGEMENT, LLC

7.6M

+7.4%

SUMITOMO MITSUI TRUST GROUP, INC.

6.0M

-15.9%

ETF & Fund Activity, Q2 2026

How the covering funds split between buying, holding and selling

176

39 buying176 unchanged16 selling

231 funds held PACB in Q2 2026, holding 120.9M shares between them, down 2.5% on the quarter.

Largest fund holders

VANGUARD MALVERN FUNDS36.1K sh

BlackRock Variable Series Funds, Inc.36.1K sh

VARIABLE INSURANCE PRODUCTS FUND II32.2K sh

Notable Insider Transactions, Q3 2026

Largest open-market purchases and sales by value in the last eight quarters

Sale · Feb 17

HENRY CHRISTIAN O

$522.9K

Sale · Feb 18

HENRY CHRISTIAN O

$488.1K

Sale · Feb 18

HENRY CHRISTIAN O

$229.5K

Insider transactions from SEC Form 4 filings; institutional holdings from quarterly 13F filings, which are reported with a lag and can overlap between filers. 13F: quarterly institutional holdings report · ETF: Exchange-Traded Fund

See the complete picture

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

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Generated September 18, 2026

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

Smart Money Sentiment

PACB Smart Money Sentiment Score

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

Smart Money

3.3/5

Neutral

Weighted across 3 components

Component Breakdown (3 of 3 available)

Insider Activity

40% weight

Institutional Flow

50% weight

+18

Fund Flow

10% weight

+60

Overall Smart Money sentiment of 3.3/5 (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 September 18, 2026.

Insider Trading Activity

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

Insider Selling Pace for PACB

Each quarter's selling vs the stock's own trailing 6-quarter average; 1.0x is typical for this stock. Green triangles mark quarters with insider buying.

Neutral

Routine insider selling in Q3 2026

1 sale totaling $30.4K (26.9K shares)

Share volume is well below the historical pace (0.1x average), insiders are holding more

Buying seen in 1 of 15 quarters

0.1x

Selling pace

quarter in progress, filings still arriving

0.16%

Stake sold

of active insiders' holdings

1 seller

Seller breadth

vs 1.5 avg per quarter

Q1 2024

Last insider purchase

buying in 1 of 16 quarters

Notable Recent Transactions, PACB

Top 8 highest-value insider trades from the last 8 quarters

HENRY CHRISTIAN O

Officer

Sell

331,793 shares at $1.58

≈10.5% of their stake at the time

Feb 17, 2026$522.91K

HENRY CHRISTIAN O

Officer

Sell

259,909 shares at $1.88

≈10.4% of their stake at the time

Feb 18, 2025$488.11K

HENRY CHRISTIAN O

Officer

Sell

140,874 shares at $1.63

≈5.0% of their stake at the time

Feb 18, 2026$229.48K

Van Oene Mark

Officer

Sell

129,790 shares at $1.58

≈6.7% of their stake at the time

Feb 17, 2026$204.55K

Van Oene Mark

Officer

Sell

100,773 shares at $1.88

≈6.3% of their stake at the time

Feb 18, 2025$189.25K

Gibson James R II

Officer

Sell

88,185 shares at $1.37

≈6.6% of their stake at the time

Apr 1, 2026$120.81K

Van Oene Mark

Officer

Sell

55,107 shares at $1.63

≈3.1% of their stake at the time

Feb 18, 2026$89.77K

Van Oene Mark

Officer

Sell

34,405 shares at $2.03

≈2.1% of their stake at the time

Jan 10, 2025$69.98K

Institutional Ownership Analysis

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

Institutional Positions for PACB

Institutions adding (new + increased) above zero, reducing (reduced + closed) below, net as a line

New Increased Reduced Closed Net (adding − reducing)

Neutral

Mixed institutional activity in Q2 2026

62.4% institutional ownership

Balanced activity: 118 adding vs 111 reducing

13F shares increased by 2.9%, a notable change

Momentum weakening from prior quarter

Net breadth

118 adding vs 111 reducing

Balanced

1.06

Add / reduce ratio

in Q2 2026

-8

New − closed

25 initiated, 33 exited

5 of 10

Top holders adding

largest holders with a known change

Position Changes

Q2 2026: how are institutions adjusting their positions?

+118 growing-111 shrinkingNet: +7

New (25)

Increased (93)

Reduced (78)

Closed (33)

Top Institutional Holders, PACB

Largest 8 institutional positions by ownership percentage as of Q2 2026

BLACKROCK, INC.

32.3M

$54.3M

Ownership

10.41%

+26.0%

ARK INVESTMENT MANAGEMENT LLC

29.8M

$50.0M

Ownership

9.59%

-19.2%

SOFTBANK GROUP CORP.

20.5M

$34.4M

Ownership

6.58%

-1.6%

VANGUARD CAPITAL MANAGEMENT LLC

13.4M

$22.5M

Ownership

4.31%

+3.2%

GEODE CAPITAL MANAGEMENT, LLC

7.6M

$12.8M

Ownership

2.45%

+7.4%

NIKKO ASSET MANAGEMENT AMERICAS, INC.

6.0M

$10.0M

Ownership

1.93%

-15.9%

SUMITOMO MITSUI TRUST GROUP, INC.

6.0M

$10.1M

Ownership

1.93%

-15.9%

STATE STREET CORP

6.0M

$10.0M

Ownership

1.92%

-4.1%

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: 231 ETFs and mutual funds reporting

39 buying16 sellingNet: +23

176

Buying (39)

Unchanged (176)

Selling (16)

In total, funds bought 4.3M shares and sold 7.3M this quarter. Each fund counts once in the bar above, whatever the size of its move.

Very Bullish

Funds accumulating in Q2 2026

231 ETFs and mutual funds reporting

39 funds buying vs 16 selling

Top Fund Holders, PACB

Largest 8 ETF and mutual fund positions by shares held, each fund's latest filing

VANGUARD MALVERN FUNDS

36.1K

Weight

0.00%

Jun 30, 2026No change

BlackRock Variable Series Funds, Inc.

36.1K

Weight

0.00%

Jun 30, 2026No change

VARIABLE INSURANCE PRODUCTS FUND II

32.2K

Weight

0.14%

Jun 30, 2026Increased

BlackRock Advantage SMID Cap Fund, Inc.

31.9K

Weight

5.67%

Jun 30, 2026No change

SPDR INDEX SHARES FUNDS

31.8K

Weight

0.02%

Jun 30, 2026No change

VANGUARD QUANTITATIVE FUNDS

31.2K

Weight

0.20%

Jun 30, 2026Increased

MAINSTAY VP FUNDS TRUST

30.9K

Weight

0.02%

Jun 30, 2026No change

HC CAPITAL TRUST

29.1K

Weight

0.05%

Jun 30, 2026No change

Pacific Biosciences of California, Inc.· PACB

Holdings Analysis

Insider Trading Activity

1.3Transaction History153Real market purchases and sales onlyShow All Types

Institutional Ownership Analysis

2.4Detailed Holdings82Most 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 History153Real market purchases and sales onlyShow All Types

Institutional Ownership Analysis

2.4Detailed Holdings82Most 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