PACB

Pacific Biosciences Of Calif Cross-source read$1.30 2.36%
Health CareCUSIP 69404D108· EOD Sep 11, 2026

Among active 13F managers last quarter, 9 opened and 14 added, while 17 reduced; the largest holder to move was ARK Investment Management LLC (−18%). Over the last 180 days, 2 insiders sold and none bought, a net -$151K in open-market trades.

Tracked 13F holders
208
92 in Q2 2026 filings
13F value (tracked)
$268.3M
Smart-money readMixed
Net sellingNet buying
Funds · active managers, latest 13F
23 adding · 17 trimming
Insiders · Form 4 open-market, 180d
0 buying · 2 selling · -$151K
US House · STOCK Act, 180d
0 buying · 0 selling

The legs disagree, or only one of them leans.

Price & smart-money activity

$1.30 2.36%5Y -95.3%
$0.90$8.78$16.66$24.53$32.41202120222023202420252026241403143234132364023236333575127493564640236521150333344434304532640363345343650361055491835
Hover for who · click for detailEnd-of-day closing prices52w $1.11 – $2.67

Who owns PACB?

208 tracked 13F filers · ranked by shares held

208 tracked 13F filers disclose a position in PACB as of the latest SEC 13F filings, a combined $268.3M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

#FundSharesPosition valueLast moveAs ofHistory
1BlackRock, Inc.32.3M
$54.3M
+28%
Added · +7.1M sh
Q2 2026
2ARK Investment Management LLC29.8M
$50.0M
−18%
Reduced · −6.5M sh
Q2 2026
3Vanguard Capital Management LLC13.4M
$22.5M
+4.8%
Added · +620K sh
Q2 2026
4Geode Capital Management, LLC7.6M
$12.8M
+9.0%
Added · +631K sh
Q2 2026
5Sumitomo Mitsui Trust Group, Inc.7.0M
$9.3M
−9.9%
Reduced · −771K sh
Q1 2026
6Amova Asset Management Americas, Inc.7.0M
$9.2M
−9.9%
Reduced · −771K sh
Q1 2026
7State Street Corp6.0M
$10.0M
−2.6%
Reduced · −161K sh
Q2 2026
8Millennium Management LLC4.9M
$6.5M
+13%
Added · +548K sh
Q1 2026
9Point72 Asset Management, L.P.4.8M
$8.0M
17×
Added · +4.5M sh
Q2 2026
10D. E. Shaw & Co., Inc.3.6M
$4.8M
−18%
Reduced · −801K sh
Q1 2026
11Two Sigma Investments, LP3.5M
$4.6M
+22%
Added · +632K sh
Q1 2026
12Nuveen, LLC3.0M
$3.9M
+248%
Added · +2.1M sh
Q1 2026
13Citadel Advisors LLC2.8M
$4.8M
+81%
Added · +1.3M sh
Q2 2026
14Vanguard Portfolio Management LLC2.7M
$4.5M
−6.8%
Reduced · −196K sh
Q2 2026
15Renaissance Technologies LLC2.5M
$3.3M
−35%
Reduced · −1.4M sh
Q1 2026
16Charles Schwab Investment Management Inc2.4M
$3.2M
−2.4%
Reduced · −60K sh
Q1 2026
17Vanguard Fiduciary Trust Co2.2M
$3.7M
+10%
Added · +201K sh
Q2 2026
18Northern Trust Corp2.1M
$2.8M
+4.1%
Added · +84K sh
Q1 2026
19Morgan Stanley1.8M
$2.4M
−24%
Reduced · −570K sh
Q1 2026
20Susquehanna International Group, LLP1.7M
$2.3M
−34%
Reduced · −892K sh
Q1 2026
21Iq Eq Fund Management (Ireland) Ltd1.7M
$2.8M
−5.2%
Reduced · −94K sh
Q2 2026
22Bank Of America Corp1.7M
$2.2M
−10%
Reduced · −188K sh
Q1 2026
23UBS Group AG1.6M
$2.2M
−48%
Reduced · −1.5M sh
Q1 2026
24Jane Street Group, LLC1.4M
$1.8M
−7.4%
Reduced · −110K sh
Q1 2026
25Birchview Capital, LP1.4M
$2.3M
−10%
Reduced · −150K sh
Q2 2026

Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

Is PACB being bought or sold by institutions?

Last quarter, 9 funds opened a new position in PACB and 14 added to an existing one, while 17 reduced. Based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).

Opened
9
funds took a first position
Added
14
added to an existing position
Reduced
17
reduced, still holding
Biggest moves · ranked by size of the change, positions above a floor

Funds that own PACB also own

CompanyCo-held byTheir position there
Nvidia CorpNVDA107 funds$216.8B
Amazon.com IncAMZN107 funds$107.7B
Microsoft CorpMSFT106 funds$125.6B
Eli Lilly & CoLLY103 funds$48.3B
Alphabet Inc-CL AGOOGL102 funds$95.0B
Advanced Micro DevicesAMD102 funds$38.3B
Visa Inc-Class A SharesV102 funds$35.1B
Apple IncAAPL101 funds$154.8B
Meta Platforms Inc-Class AMETA101 funds$61.4B
Broadcom IncAVGO100 funds$90.9B
Alphabet Inc-CL CGOOG100 funds$72.9B
Tesla IncTSLA100 funds$40.5B

Ranked by how many of PACB's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in PACB.

Insider activity (Form 4)

Full insider page →
Sells · 180d
$151K
2 insiders
Net · 180d
-$151K
2 open-market transactions
DateInsiderRoleActionSharesValue
Aug 17, 2026Van Oene MarkSee RemarksSell (S)27K$30K
Apr 1, 2026Gibson James R IISee RemarksSell (S)88K$121K
Mar 3, 2026Farmer MicheleSee RemarksSell (S)3K$4K
Mar 3, 2026Van Oene MarkSee RemarksSell (S)7K$10K
Mar 3, 2026Henry Christian OSee RemarksSell (S)12K$19K
Feb 18, 2026Farmer MicheleSee RemarksSell (S)15K$24K
Feb 18, 2026Henry Christian OSee RemarksSell (S)141K$230K
Feb 18, 2026Van Oene MarkSee RemarksSell (S)55K$90K
Feb 17, 2026Farmer MicheleSee RemarksSell (S)35K$56K
Feb 17, 2026Henry Christian OSee RemarksSell (S)332K$524K
Feb 17, 2026Van Oene MarkSee RemarksSell (S)130K$205K
Aug 18, 2025Van Oene MarkSee RemarksSell (S)27K$35K

Do institutions, insiders and Congress agree?

Mixed signals

Where institutional funds (13F), corporate insiders (Form 4) and US House members (STOCK Act) are buying or selling the same name in the same window. Green is buying, red is selling.

SEC EDGAR 13F + Form 4 + US House STOCK Act{ }get_ticker_confluence · API & MCP

Signals by source

Insiders and Congress: last 180 days. Funds: latest 13F, top 100 holders incl. passive

SourceBuyingSellingNet
13F funds
Top 100 holders by value, passive included; the hero counts active managers only
3239
Insiders
Form 4 open-market
02-$151K
US House
STOCK Act trades
00$0
Sector rotation
PACB is in Health Care, which smart money is rotating OUT OF
$5.0B

Capital Rotation reports where institutional capital disclosed rotating, as of the latest public SEC 13F filings. It is data, not investment advice, a recommendation, or a prediction. Filings lag about 45 days and cover long US equity positions only. Past disclosed flows do not indicate future prices. Do your own research; consult a licensed advisor.

Institutional ownership over time

92 tracked filers in Q2 2026 filingsstill filing
0104208Q3 2024Q1 2025Q3 2025Q1 2026Q2 2026
tracked filers holding their reported valueQ2 2026 filings so far: $40.1M
Each bar counts tracked filers with a position in that quarter's filings, so the newest bar excludes filers still on an earlier quarter. Arkolith's tracked universe has grown over this window; part of any long-run rise is coverage, not new buyers.

Recent filings

15 most recent

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Connected entities for PACB

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Ask your agent what changed in PACB

This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.

Copy-paste
curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://arkolith.com/api/v1/stocks/PACB/capital-change-brief"
Ask your agent
Use Arkolith's capital_change_brief for PACB.
Tell me what changed, whether insider activity
corroborates it, and cite the SEC evidence.

13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for PACB. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.