Christopher Bloomstran - Semper Augustus Investments Group Investment Strategy & Portfolio Analysis
How Semper Augustus Investments Group allocates capital, manages risk, and constructs its portfolio — based on SEC 13F filings.
According to the SEC 13F filed on Aug 14, 2026, Christopher Bloomstran's Semper Augustus Investments Group portfolio reflects a concentrated approach across 48 reported 13F positions as of quarter-end Jun 30, 2026. Portfolio returns are primarily driven by a small set of mega-cap compounders, with the top five holdings accounting for approximately 53% of total exposure and Berkshire Hathaway Inc. New alone contributing ~16%. While the portfolio includes 48 positions, economic outcomes are highly concentrated in a narrow set of large-cap financial and consumer defensive names. Exposure to high-growth and technology-oriented segments remains limited relative to peers, with performance instead anchored in durable, cash-generating businesses across financials, industrials, and consumer staples. The portfolio exhibits low turnover, consistent with a buy-and-hold posture held through multiple reporting cycles. Distinctive traits include Long-Term Holder, Structurally Diversified.
Investment Style
Value, growth, quality, and behavioral classification from latest 13F holdings.
Primary type: Value Investor
Traits: Long-Term Holder, Structurally Diversified
Turnover profile
Moderate
Holding horizon
Long-Term
Portfolio Construction
Concentration and position sizing in the latest filing.
Portfolio construction is moderately concentrated: top three names represent 36.5% of assets, top five 52.8%, and the largest single position is 15.6%.
Top 3 weight
36.5%
Top 5 weight
52.8%
Top 10 weight
79.5%
Largest position
15.6%
Top holdings: Berkshire Hathaway Inc. New, Alaska Air Group, Inc., Berkshire Hathaway Inc., Dollar General Corporation, Deckers Outdoor Corporation — view full holdings
Sector Preferences
Where capital is allocated by sector.
Capital is tilted toward Financial Services and Industrials, with 11 sectors represented in the latest filing.
Leading sectors: Financial Services, Industrials, Consumer Defensive
Risk Framework
Concentration, diversification, and turnover tolerance.
This investor accepts moderate single-name risk (largest position 15.6%, top ten 79.5%) and moderate economic diversification (HHI 0.06). Turnover tolerance maps to a moderate profile.
Largest position
15.6%
Top 10 weight
79.5%
Max sector
28.9%
Diversification
Moderate
Strategy Evolution
How the strategy changed between the two most recent filing periods.
Mar 31, 2026 → Jun 30, 2026
- Position count increased from 43 to 48 (+5 names).
- Top-five concentration rose from 49.3% to 52.8%.
- Dominant sector mix shifted from Financial Services, Basic Materials to Financial Services, Industrials.
- Quarter-over-quarter portfolio weight turnover: 14.8%.
For trade-level changes, see the Activity page. View activity.
Similar Investors
Peer group with comparable portfolio behavior.
Similar-investor comparisons are coming soon.