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STX

Seagate Technology Holdings PLC · Technology · Computer Hardware
TECHStrong SellMABuy · 8ZACKSBuy R500#494 today TARGET+76% EARNINGSEPS adj. beat +4% · rev +2.2%
$593.76 -7.88% today · -7.83% 1W
Nov 2 close or latest
Pre-market $602.89 +1.54% ·
Why it movedMemory stocks fall on Kioxia outlookReadout ›

Holders' trades in the past 90 days

Selling: ≈$165.7M sold, nothing bought. Net of both sides: 0.09% of the float.

WhoDoing≈ ValueOf the floatOf market capTheir stakePublicPrice sincePrice vs theirs
Insiders · Form 4 Sold · 13 trades, 5 people, Aug 13 – Oct 23 $165.7M 0.09% 0.12% Oct 26 -7.8% -24.9%
Congress · PTR Sold · 2 trades, 2 people, Sep 30 – Oct 23 $65K <0.01% Oct 28 -14.9%

After STX's past unplanned insider sales (24 times), its median move a month later was +3.0%. Aftermath

The chart beside it

Technical rating: Strong Sell (0 buy, 9 neutral, 17 sell of 26 indicators). RSI 33. Price -25.2% vs its 50-day average, -14.3% vs its 200-day, -45.6% from its 52-week high. Next 5 sessions: bargain $534.08 (-10.1%), stretch $660.11 (+11.2%). 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
−$351.4K
unplanned net · 0 buys · 1 sell · 1 insider
sales: 1 unplanned, 0 under a 10b5-1 plan (100% unplanned)
Insiders · 3 months
−$165.7M
unplanned net · 0 buys · 30 sells · 6 insiders
sales: 13 unplanned, 17 under a 10b5-1 plan (43% unplanned)
Congress · 3 months
≈−$65K
0 buys · 2 sells · 2 members
Congress · 1 year
≈−$73K
1 buy · 4 sells · 4 members
Fund moves · 3 months
none
no moves by the funds we follow
Held by funds · now
none
none of the funds we follow holds it

Insiders

Trade dateInsiderRoleSideTypeSharesAvg priceValueFiled
Oct 23, 2026 James Ci Lee EVP Sell unplanned 547.25 $642.14 $351.4K Oct 26
Oct 1, 2026 William D Mosley CEO Sell 10b5-1 plan 18,998 $914.67 $17.4M Oct 2
Oct 1, 2026 William D Mosley CEO Sell 10b5-1 plan 11,002 $935.60 $10.3M Oct 2
Sep 21, 2026 John Christopher Morris CTO Sell 10b5-1 plan 9,354 $877.91 $8.2M Sep 22
Sep 15, 2026 John Christopher Morris CTO Sell unplanned 15,465.5 $772.15 $11.9M Sep 16
Sep 15, 2026 Ban Seng Teh EVP Sell 10b5-1 plan 52,730 $782.08 $41.2M Sep 16
Sep 15, 2026 William D Mosley CEO Sell unplanned 97,889.25 $772.14 $75.6M Sep 16
Sep 15, 2026 Gianluca Romano CFO Sell unplanned 49,983.5 $772.16 $38.6M Sep 16
Sep 14, 2026 William D Mosley CEO Sell unplanned 1,869.75 $781.23 $1.5M Sep 15
Sep 14, 2026 Gianluca Romano CFO Sell 10b5-1 plan 5,555 $841.95 $4.7M Sep 15
Sep 14, 2026 John Christopher Morris CTO Sell unplanned 492.75 $781.23 $385K Sep 15
Sep 14, 2026 Ban Seng Teh EVP Sell 10b5-1 plan 989 $779.00 $770.4K Sep 15
Sep 11, 2026 Gianluca Romano CFO Sell 10b5-1 plan 45,898 $830.01 $38.1M Sep 15
Sep 10, 2026 William D Mosley CEO Sell unplanned 2,849.25 $862.13 $2.5M Sep 11
Sep 10, 2026 Gianluca Romano CFO Sell unplanned 1,348 $862.13 $1.2M Sep 11

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

Trade dateMemberChamberSideAmountDisclosed
Oct 23, 2026 Kevin Hern House Sell $15K–$50K Oct 28
Sep 30, 2026 Lisa McClain House Sell $15K–$50K Oct 12
Mar 27, 2026 Alan Armstrong Senate Buy $1K–$15K Jul 21
Dec 18, 2025 Julie Johnson House Sell $1K–$15K Jan 15
Nov 13, 2025 Julie Johnson House Sell $1K–$15K Dec 11
Oct 28, 2025 Kevin Hern House Sell $15K–$50K Nov 16

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
None of the investors we follow holds STX in their latest portfolio.
ValueAct's trades as an owner (Form 4)
SideTradedSessions tradedShares≈ ValuePrice over it
Selling Feb 17 – Feb 22, 2022 3 2,050,000 $221.4M +0.0%
Selling Nov 11 – Nov 15, 2021 3 1,890,000 $203.5M +0.8%
Selling Apr 30 – May 3, 2021 2 5,634,153 $507.9M -6.3%

A manager owning 10% or more of a company (or with a seat on its board) reports each open-market trade on Form 4 within two business days, long before its next 13F. A run: the same way with at most two sessions between trades; it may still go on while its last trade is within two sessions of the latest filings due. Value at the reported prices.

Their moves
No moves in STX by the investors we follow.

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