Exited position

Chris Hohn’s Thermo Fisher Scientific Inc (TMO) position

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

TCI Fund Management LtdVerified through Q2 2026
Relationship snapshot

At a glance

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

First reportedQ4 2022Earliest verified positive filing snapshot
Latest statusExited positionBased on the latest supported relationship state
Peak shares3.19MHighest verified quarter-end share count
Quarters reported6Verified quarters with shares above zero
What happened?

TCI Fund Management Ltd first reported Thermo Fisher Scientific Inc in Q4 2022. The reported position was increased and reduced across later filings. The latest verified relationship event shows that TCI Fund Management Ltd sold the entire position in Q2 2024, and the stock is no longer reported in the latest verified portfolio.

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 2024
Sold the entire position−1.52M shares · No shares reported at quarter-end
Q1 2024
Sold 51.8% of the position−1.63M shares · 1.52M shares remained
Filing context

Quarter-end price $581.21 · Estimated holding basis $535.41

Q4 2023
Sold 1.5% of the position−46.80K shares · 3.15M shares remained
Filing context

Quarter-end price $530.79 · Estimated holding basis $535.41

Q3 2023
Bought 0.6% more+20.00K shares · 3.19M shares reported after the change
Filing context

Quarter-end price $506.17 · Estimated holding basis $535.41

Q2 2023
Bought 280.4% more+2.34M shares · 3.17M shares reported after the change
Filing context

Quarter-end price $521.75 · Estimated holding basis $535.59

Q1 2023
Bought 1,208.1% more+770.38K shares · 834.15K shares reported after the change
Filing context

Quarter-end price $576.37 · Estimated holding basis $574.41

Portfolio importance

How important was Thermo Fisher Scientific Inc in TCI Fund Management Ltd’s reported portfolio?

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

Last reported portfolio weight2.2%Q1 2024
Last reported rank#9of 10 reported positions
Peak portfolio weight5.9%Q3 2023
Best historical rank#8Q3 2023
At peak importanceQ3 2023
TMO
5.9%
Largest holding
16.7%
Cross-investor discovery

Who else owns Thermo Fisher Scientific Inc?

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

Stanley DruckenmillerDuquesne Family Office
TMO0.2% of reported portfolio
Joel GreenblattGotham Asset Management
TMO0.2% of reported portfolio
Ray DalioBridgewater Associates, LP
TMO0.0% of reported portfolio
Explore Thermo Fisher Scientific Inc across all tracked investors →
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$609.822026-09-11

Market context only; not an investor transaction price.

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

This tracker follows TCI Fund Management Ltd’s Form 13F disclosures, not Chris Hohn’s personal brokerage account. Form 13F reports quarter-end positions later and does not reveal exact trade dates or execution prices.