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PACB · Pacific Biosciences Of California, Inc.

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$1.29 +0.01 (+0.78%)
Market Cap
$435.16M
Shares
310.83M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 222
Total Value: $322,750,477
Total Shares: 192,114,233
Showing 1–100 of 229 holdings by value · page 1 of 3

Institutional Ownership Trend

26 quarters

Superinvestors Holding PACB

All superinvestors →

Holder Concentration

Across 222 13F filers · Δ vs Mar 31, 2026
Top Holder
16.8%
Sep 2023 → Jun 2026 · range 11.2% – 19.2%
−2.3 pts
Top 5
53.9%
Sep 2023 → Jun 2026 · range 39.5% – 56.0%
+0.2 pts
Top 10
68.0%
Sep 2023 → Jun 2026 · range 56.5% – 78.2%
−0.9 pts
HHI
772
Sep 2023 → Jun 2026 · range 440 – 816
Broadly held−22

Quarterly Activity

vs Mar 31, 2026
New
24
Increased
70
Decreased
77
Sold Out
34
Unchanged
51
Holder count: -10
Institutional value: +29.1%
Shares held: +1.4%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 229
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1299130 CUSIP 69404D108 13F (30d) 179 filings 175 filers Visit website