Current position

Christopher Bloomstran’s Olin Corp (OLN) position

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

Semper Augustus Investments Group LLCVerified through Q2 2026
Relationship snapshot

At a glance

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

First reportedQ3 2019Earliest verified positive filing snapshot
Latest statusCurrent positionBased on the latest supported relationship state
Peak shares2.15MHighest verified quarter-end share count
Quarters reported28Verified quarters with shares above zero
What happened?

Semper Augustus Investments Group LLC first reported Olin Corp in Q3 2019. The reported position was increased and reduced across later filings. Semper Augustus Investments Group LLC currently reports 2.15M shares. The latest verified filing showed: Bought 6.1% more.

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 2026
Bought 6.1% more+124.51K shares · 2.15M shares reported after the change
Filing context

Quarter-end price $19.82 · Estimated holding basis $23.61

Q1 2026
Bought 4.4% more+85.88K shares · 2.03M shares reported after the change
Filing context

Quarter-end price $29.73 · Estimated holding basis $23.85

Q4 2025
Bought 1.0% more+19.20K shares · 1.94M shares reported after the change
Filing context

Quarter-end price $20.83 · Estimated holding basis $23.59

Q3 2025
Bought 141.3% more+1.13M shares · 1.92M shares reported after the change
Filing context

Quarter-end price $24.99 · Estimated holding basis $23.62

Q2 2025
Bought 13.5% more+94.97K shares · 797.44K shares reported after the change
Filing context

Quarter-end price $20.09 · Estimated holding basis $21.67

Q1 2025
Bought 20.0% more+116.97K shares · 702.47K shares reported after the change
Filing context

Quarter-end price $24.24 · Estimated holding basis $21.89

Portfolio importance

How important is Olin Corp in Semper Augustus Investments Group LLC’s reported portfolio?

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

Current portfolio weight4.8%Q2 2026
Current rank#8of 50 reported positions
Peak portfolio weight12.9%Q4 2021
Best historical rank#2Q4 2021
At peak importanceQ4 2021
OLN
12.9%
Largest holding
19.7%
Cross-investor discovery

Who else owns Olin Corp?

Also reported by 2 other tracked investors in their latest verified filings.

Joel GreenblattGotham Asset Management
OLN0.0% of reported portfolio
Ray DalioBridgewater Associates, LP
OLN0.0% of reported portfolio
Explore Olin Corp 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$16.842026-09-18

Market context only; not an investor transaction price.

Latest filing quarter-end price$19.82Q2 2026

Derived from validated reported value and shares where supported.

Estimated holding basis$23.61Historical reference — not actual purchase price

Calculated from supported filing history.

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

This tracker follows Semper Augustus Investments Group LLC’s Form 13F disclosures, not Christopher Bloomstran’s personal brokerage account. Form 13F reports quarter-end positions later and does not reveal exact trade dates or execution prices.