Wallsti
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PACB

Pacific Biosciences of Californ · Healthcare · Medical Devices
R500#498 today EARNINGStomorrow AMC
$2.35 -9.96% today · +4.44% 1W
Nov 2 close or latest
Why it's movingGave up an early 2.7% gainReadout ›

Holders' trades in the past 90 days

Buying: ≈$5.3M bought, nothing sold. Net of both sides: 0.77% of the float.

WhoDoing≈ ValueOf the floatOf market capTheir stakePublicPrice sincePrice vs theirs
ARK Invest · ARK daily Buying · 2 sessions, Oct 30 – Nov 2 · still going · went on 63% of the time before $2.7M 0.36% 0.33% 8.2% of shares Nov 2 +0.0% -4.6%
ARK Invest · ARK daily Bought · 5 sessions, Oct 20 – Oct 26 $2.6M 0.41% 0.32% 8.2% of shares Oct 26 +4.4% +13.5%

In Wallsti's check of 2020–2026, stocks trailed QQQ by about 3% over the 60 sessions after ARK's buys and did about as well as QQQ after its sales.

The chart beside it

Price +27.0% vs its 50-day average, +45.9% vs its 200-day, -19.0% from its 52-week high. Next 5 sessions: bargain $1.96 (-16.4%), stretch $2.81 (+19.7%). Technical · Pricing

Everyone we follow who traded the stock in the past 90 days, the runs still going first. Public: the day the trade became known (ARK's the evening of each session, a Form 4 or 13F on its filing day, Congress's on its report); price since: from that day's close to the latest. Price vs theirs: the latest price against the average they paid or got (a 13F's is the quarter-end price). Of the float: the shares traded over the shares the public can trade; their stake: shares held over all shares outstanding (a manager's: its last 13F plus its Form 4 runs since, ≈). Insiders: unplanned trades only (open-market buys, sales outside a 10b5-1 plan). 13F values are at the quarter's end and the trades happened some time in the quarter. The technical rating and bargain / stretch prices are the Technical and Pricing tabs' own. These describe the flow, not a forecast.

Insiders · 1 month
none
no open-market trades
Insiders · 3 months
none
no open-market trades
Congress · 3 months
none
no reported trades
Congress · 1 year
none
no reported trades
Fund moves · 3 months
≈+$5.3M
7 buys · 0 sells · 1 investor
Held by funds · now
≈$66.6M
2 investors · largest: ARK Invest

Insiders

No insider buys or sales on record for PACB.

Officers, directors and 10% owners file SEC Form 4 within two business days. Unplanned: the insider chose to trade now, the trades worth attention; their dollars make the net above. 10b5-1 plan: scheduled in advance, kept for the record. Tax: shares withheld on vesting stock, not a market trade. Awards, option exercises and gifts are left out. Source: SEC EDGAR, collected daily for the stocks discussed on Reddit.

Congress

No congressional trades in PACB on record.

Members of Congress report trades within 45 days of the trade date, so these are never real-time. Amounts are disclosed as ranges; the net uses each range's midpoint (≈). Source: House and Senate periodic transaction reports via CongressInvests, refreshed daily.

Funds

Who holds it
InvestorSharesValueOf its portfolioVs quarter beforeAs of
ARK Invest (Cathie Wood) 25,510,239 $66.5M ARKG 1.4% · ARKK 0.6% — Nov 2
Bridgewater (Ray Dalio's firm) 102,761 $172.6K 0.00% new Q2 2026
ARK's position

ARK holds PACB at 0.50% of its portfolio (#50 of 124) and has barely traded it in the past month. Buying on 2 sessions since Oct 30; past runs that long went on 63% of the time.

OverShare of ARK then → nowNet bought or soldFrom tradingFrom price and other
1M since Oct 2 0.41% → 0.50% +$3.8M +0.03+0.06
3M since Aug 3 0.27% → 0.50% +$3.8M +0.03+0.20
1Y since Oct 31 0.40% → 0.50% +$6.5M +0.05+0.06
ARK's buying and selling runs
SideTradedSessions tradedShares≈ ValueOf each session's volumePrice over it
Buying · still going Oct 30 – Nov 2, 2026 2 1,100,162 $2.7M 5.2% -10.0%
Buying Oct 20 – Oct 26, 2026 5 1,233,321 $2.6M 2.9% +14.8%
Selling Jun 10 – Jun 15, 2026 4 821,840 $1.1M 4.0% -3.6%

Share of ARK: the stock's value over all of ARK's ETFs added up, from their daily holdings. From trading: the net dollars ARK bought (+) or sold (−) over the window's average assets, in points; from price and other: the rest of the change, mostly the stock's price against ARK's other holdings. A run: ARK trading the stock the same way with at most two sessions between trades (ARK spreads large orders out). This describes ARK's flow, not the price: in our check of 2020–2026, stocks trailed QQQ by about 3% over the 60 sessions after ARK's buys, and did about as well as QQQ after its sales.

Their moves
DateInvestorMoveSourceShares≈ ValueNow heldFiled
Nov 2, 2026 ARK Invest (Cathie Wood) Bought ARKK, ARKG 619,888 $1.5M source
Oct 30, 2026 ARK Invest (Cathie Wood) Bought ARKK, ARKG 480,274 $1.3M source
Oct 26, 2026 ARK Invest (Cathie Wood) Bought ARKK, ARKG 39,450 $88.8K source
Oct 23, 2026 ARK Invest (Cathie Wood) Bought ARKK, ARKG 270,693 $571.2K source
Oct 22, 2026 ARK Invest (Cathie Wood) Bought ARKK, ARKG 354,696 $730.7K source
Oct 21, 2026 ARK Invest (Cathie Wood) Bought ARKK, ARKG 265,611 $568.4K source
Oct 20, 2026 ARK Invest (Cathie Wood) Bought ARKK, ARKG 302,871 $593.6K source
Jun 15, 2026 ARK Invest (Cathie Wood) Sold ARKK 191,794 $253.2K source
Jun 12, 2026 ARK Invest (Cathie Wood) Sold ARKK 12,912 $16.9K source
Jun 11, 2026 ARK Invest (Cathie Wood) Sold ARKK 392,952 $530.5K source
Jun 10, 2026 ARK Invest (Cathie Wood) Sold ARKK 224,182 $307.1K source
Dec 30, 2025 ARK Invest (Cathie Wood) Bought ARKK, ARKG 423,426 $732.5K source
Dec 23, 2025 ARK Invest (Cathie Wood) Bought ARKK, ARKG 333,370 $606.7K source
Dec 22, 2025 ARK Invest (Cathie Wood) Bought ARKK, ARKG 798,771 $1.5M source
Nov 20, 2025 ARK Invest (Cathie Wood) Bought ARKK, ARKG 290,617 $546.4K source

Well-known investors we follow (Buffett, Ackman, Icahn, Druckenmiller, Tepper, Soros and others). 13F: managers report their US stock holdings up to 45 days after each quarter; the change from the quarter before is dated by the filing, the trades happened some time in the quarter, and the value is at the quarter-end price (≈). New and closed positions, and adds or cuts of 20% or more, of positions at least 0.2% of the portfolio. ARK: Cathie Wood's ETFs publish their holdings every morning; the change beyond the fund's own inflows and outflows, dated by the session it traded. 5%+ stake: Schedule 13D (with intent to influence) or 13G (passive), filed within days. Source: SEC EDGAR, ark-funds.com, refreshed daily. Who holds it: each investor's latest 13F portfolio (positions at the quarter's end; one sold since would not show until the next filing), and ARK's ETFs as of their latest daily file. The funds we follow and their portfolios · All recent insider, congressional and fund moves