Historical position

George Soros’s Teradyne Inc (TER) position

Reported position history, portfolio importance and verified filing changes from public SEC disclosures.

Soros Fund ManagementVerified through Q2 2026
Relationship snapshot

At a glance

The full verified relationship, including prior ownership episodes and exits where supported.

First reportedQ1 1999Earliest verified positive filing snapshot
Latest statusHistorical positionBased on the latest supported relationship state
Peak shares1.07MHighest verified quarter-end share count
Quarters reported11Verified quarters with shares above zero
What happened?

Soros Fund Management first reported Teradyne Inc in Q1 1999. The reported position was increased and reduced across later filings. Verified positive position history runs through Q1 2014. The current relationship status cannot be determined reliably from supported data.

Verified SEC history

Position over time

See the same verified relationship through reported shares, portfolio weight or reported value.

Metric

Gaps indicate periods that cannot be safely connected or where a verified corporate action changes the raw share scale. Stock price, when available, is market context and not a transaction price.

Key filing events

What changed

Latest filing plus the most meaningful reported changes. Unchanged quarters are collapsed by default.

Q2 2014
Sold the entire position−765.89K shares · No shares reported at quarter-end
Q1 2014
New position+765.89K shares · 765.89K shares reported
Filing context

Quarter-end price $19.89 · Estimated holding basis $19.89

Q4 2010
Sold the entire position−31.60K shares · No shares reported at quarter-end
Q4 2009
New position+31.60K shares · 31.60K shares reported
Filing context

Quarter-end price $10.73 · Estimated holding basis $10.73

Q2 2009
Sold the entire position−226.67K shares · No shares reported at quarter-end
Q1 2009
New position+226.67K shares · 226.67K shares reported
Filing context

Quarter-end price $4.38 · Estimated holding basis $4.38

Portfolio importance

How important was Teradyne Inc in Soros Fund Management’s reported portfolio?

Relative importance is measured only within the verified primary non-option reported portfolio for each quarter.

Last reported portfolio weight0.2%Q1 2014
Last reported rank#122of 292 reported positions
Peak portfolio weight0.5%Q4 2007
Best historical rank#46Q4 2007
At peak importanceQ4 2007
TER
0.5%
Largest holding
10.8%
Cross-investor discovery

Who else owns Teradyne Inc?

Also reported by 3 other tracked investors in their latest verified filings.

Cathie WoodARK Investment Management
TER2.0% of reported portfolio
Ray DalioBridgewater Associates, LP
TER0.2% of reported portfolio
Joel GreenblattGotham Asset Management
TER0.1% of reported portfolio
Explore Teradyne Inc across all tracked investors →
MarketInsiderLab research

Connected research on Teradyne Inc

Only published MIL research mapped to the exact stock identity is shown here.

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SEC evidence & methodology

SEC filing evidence

Market context and filing-derived values are kept separate from actual transaction prices, which 13F filings do not disclose.

Latest verified stock price$371.472026-09-18

Market context only; not an investor transaction price.

Latest verified investor filingQ2 2026 · filed 2026-08-14
Open SEC filing ↗

This tracker follows Soros Fund Management LLC’s Form 13F disclosures—not George Soros’s personal brokerage account. George Soros founded the firm; its current CEO and chief investment officer is Dawn Fitzpatrick. Form 13F does not reveal exact trade dates, execution prices or the purpose of an option position.