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TER

Teradyne, Inc. · Technology · Semiconductor Equipment & Materials
TECHSellMABuy · 7ZACKSHold R500#488 today TARGET+33%
$335.10 -6.77% today · -15.96% 1W
Oct 15 close or latest
ReadoutWhy it's moving

Moving with its chip equipment peers

Assembled from Wallsti's own signals.
Insiders · 1 month
$0
unplanned net · 0 buys · 4 sells · 3 insiders
sales: 0 unplanned, 4 under a 10b5-1 plan (0% unplanned)
Insiders · 3 months
$0
unplanned net · 0 buys · 8 sells · 3 insiders
sales: 0 unplanned, 8 under a 10b5-1 plan (0% unplanned)
Congress · 3 months
none
no reported trades
Congress · 1 year
$0
2 buys · 2 sells · 2 members
Fund moves · 3 months
≈−$116.3M
0 buys · 1 sell · 1 investor
Held by funds · now
≈$215.5M
2 investors · largest: ARK Invest

Insiders

Trade dateInsiderRoleSideTypeSharesAvg priceValueFiled
Oct 1, 2026 Mercedes Johnson Director Sell 10b5-1 plan 167 $402.90 $67.3K Oct 2
Sep 17, 2026 Marilyn Matz Director Sell 10b5-1 plan 400 $351.11 $140.4K Sep 18
Sep 15, 2026 Marilyn Matz Director Sell 10b5-1 plan 800 $337.83 $270.3K Sep 16
Sep 15, 2026 Gregory Stephen Smith CEO Sell 10b5-1 plan 4,000 $337.83 $1.4M Sep 16
Sep 1, 2026 Mercedes Johnson Director Sell 10b5-1 plan 167 $341.30 $57K Sep 2
Aug 17, 2026 Marilyn Matz Director Sell 10b5-1 plan 1,200 $425.00 $510K Aug 18
Aug 17, 2026 Gregory Stephen Smith CEO Sell 10b5-1 plan 4,000 $425.00 $1.7M Aug 18
Aug 3, 2026 Mercedes Johnson Director Sell 10b5-1 plan 166 $358.15 $59.5K Aug 4
Jul 15, 2026 Marilyn Matz Director Sell 10b5-1 plan 1,200 $356.31 $427.6K Jul 16
Jul 15, 2026 Gregory Stephen Smith CEO Sell 10b5-1 plan 4,000 $356.31 $1.4M Jul 16
Jul 1, 2026 Mercedes Johnson Director Sell 10b5-1 plan 167 $460.00 $76.8K Jul 2
Jun 15, 2026 Gregory Stephen Smith CEO Sell 10b5-1 plan 4,000 $423.03 $1.7M Jun 16
Jun 15, 2026 Marilyn Matz Director Sell 10b5-1 plan 1,200 $423.03 $507.6K Jun 16
Jun 2, 2026 Mercedes Johnson Director Sell 10b5-1 plan 167 $369.74 $61.7K Jun 3
May 22, 2026 Shannon John Poulin President Sell 10b5-1 plan 1,664 $349.17 $581K May 26

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
Mar 27, 2026 Alan Armstrong Senate Buy $1K–$15K Jul 21
Oct 31, 2025 Lisa McClain House Sell $1K–$15K Nov 21
Oct 30, 2025 Lisa McClain House Buy $1K–$15K Nov 21
Oct 30, 2025 Lisa McClain House Sell $1K–$15K Nov 21

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) 466,917 $167.8M ARKQ 4.8% · ARKX 3.0% · ARKK 0.9% — Oct 15
Bridgewater (Ray Dalio's firm) 98,627 $47.7M 0.20% -71% Q2 2026
Their moves
DateInvestorMoveSourceShares≈ ValueNow heldFiled
Aug 14, 2026 Bridgewater (Ray Dalio's firm) Trimmed 13F, Q2 2026 240,319 $116.3M 0.2% Aug 14
May 15, 2026 Bridgewater (Ray Dalio's firm) Added 13F, Q1 2026 139,185 $41.3M 0.4% May 15

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