Tom Gayner's COST Position Overview
Tom Gayner (via Markel Group Inc.) currently holds 39,150 shares of Costco Wholesale Corporation (COST) worth $36.24 M, representing 0.29% of the portfolio. First purchased in 2013-Q2, this long-term strategic position has been held for 50 quarters.
Based on 13F filings since 2013, Tom Gayner has maintained a long-term strategic position in COST, representing a significant commitment to this investment thesis. Largest addition occurred in Q2 2019, adding 150 shares. Largest reduction occurred in Q3 2013, reducing 600 shares.
Analysis based on 13F filings available since 2013 Q2
Tom Gayner's Costco Wholesale Corporation (COST) Holding Value Over Time
Track share changes against reported price movement
Quarterly Costco Wholesale Corporation (COST) Trades by Tom Gayner
| Period | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q2 2013 | +40,301 | Add 0.00% | 40,300 | $110.57 |
| Q3 2013 | -600 | Reduce 1.49% | 39,700 | $115.16 |
| Q4 2013 | -400 | Reduce 1.01% | 39,300 | $119.01 |
| Q1 2014 | -300 | Reduce 0.76% | 39,000 | $111.67 |
| Q2 2019 | +150 | Add 0.38% | 39,150 | $264.24 |
Tom Gayner's Costco Wholesale Corporation Investment FAQs
Tom Gayner first purchased Costco Wholesale Corporation (COST) in Q2 2013, acquiring 40,300 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Tom Gayner has held Costco Wholesale Corporation (COST) for 50 quarters since Q2 2013. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Tom Gayner's largest addition to Costco Wholesale Corporation (COST) was in Q2 2013, adding 40,300 shares worth $4.46 M. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
According to the latest 13F filing for Q3 2025, Tom Gayner's firm, Markel Group Inc., owns 39,150 shares of Costco Wholesale Corporation (COST), valued at approximately $36.24 M. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
As of the Q3 2025 filing, Costco Wholesale Corporation (COST) represents approximately 0.29% of Tom Gayner's publicly disclosed stock portfolio, making it one of their key holdings. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Tom Gayner's peak holding in Costco Wholesale Corporation (COST) was 40,300 shares, as reported at the end of Q2 2013. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.