Historical position

Seth Klarman’s Wabtec (WAB) position

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

Baupost GroupVerified through Q2 2026
Relationship snapshot

At a glance

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

First reportedQ2 2000Earliest verified positive filing snapshot
Latest statusHistorical positionBased on the latest supported relationship state
Peak shares2.23MHighest verified quarter-end share count
Quarters reported3Verified quarters with shares above zero
What happened?

Baupost Group first reported Wabtec in Q2 2000. The reported position was increased across later filings. Verified positive position history runs through Q4 2000. 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.

Q4 2000
Bought 20.2% more+374.60K shares · 2.23M shares reported after the change
Filing context

Quarter-end price $11.75 · Estimated holding basis $10.52

Q3 2000
Bought 65.5% more+735.10K shares · 1.86M shares reported after the change
Filing context

Quarter-end price $10.12 · Estimated holding basis $10.28

Q2 2000
New position+1.12M shares · 1.12M shares reported
Filing context

Quarter-end price $10.38 · Estimated holding basis $10.38

Portfolio importance

How important was Wabtec in Baupost Group’s reported portfolio?

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

Last reported portfolio weight3.4%Q4 2000
Last reported rank#9of 56 reported positions
Peak portfolio weight3.4%Q4 2000
Best historical rank#9Q4 2000
At peak importanceQ4 2000
WAB
3.4%
Largest holding
19.4%
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$283.222026-09-11

Market context only; not an investor transaction price.

Latest filing quarter-end price$11.75Q4 2000

Derived from validated reported value and shares where supported.

Estimated holding basis$10.52Historical reference — not actual purchase price

Calculated from supported filing history.

Latest verified investor filingQ2 2026 · filed 2026-08-13
Open SEC filing ↗

This tracker follows Baupost Group LLC/MA’s Form 13F disclosures—not Seth Klarman’s personal brokerage account. Form 13F reports quarter-end U.S.-listed positions and certain options, but it does not reveal exact trade dates, execution prices, short positions or the purpose of an option position.