Thomas Sinnickson Gayner
Thomas Sinnickson Gayner's purchase track record
How the stock did after each of Thomas Sinnickson Gayner's open-market purchases, measured from the purchase date. Several fills within a week count as one purchase.
| Purchase | Stock | Amount | 3 months | 6 months | S&P 500, 6 mo. |
|---|---|---|---|---|---|
| 2/7/2025 | MKL | $201K | -6.2% | -5.7% | +6.0% |
| 11/1/2024 | MKL | $155K | +18.4% | +21.5% | -0.7% |
| 9/12/2024 | GHC | $74K | +23.6% | +20.8% | -1.3% |
| 2/2/2024 | MKL | $141K | +11.9% | +10.5% | +7.8% |
| 11/9/2023 | GHC | $61K | +17.1% | +26.6% | +19.9% |
| 11/3/2023 | MKL | $131K | +5.6% | +18.3% | +17.6% |
| 9/8/2023 | GHC | $57K | +14.5% | +26.7% | +14.9% |
| 8/4/2023 | MKL | $148K | -8.9% | -3.7% | +10.7% |
| 5/9/2023 | GHC | $58K | +3.6% | +6.9% | +6.3% |
| 5/2/2023 | MKL | $68K | +6.6% | +9.2% | +1.8% |
| 3/6/2023 | CABO | $71K | -4.8% | -8.6% | +11.1% |
| 2/3/2023 | MKL | $33K | +1.2% | +9.8% | +8.3% |
| 11/8/2022 | MKL | $62K | +14.9% | +12.3% | +7.6% |
| 11/8/2022 | CABO | $10.14M | +26.4% | +5.5% | +7.6% |
| 9/16/2022 | GHC | $56K | +9.0% | +2.8% | +1.1% |
| 9/6/2022 | CABO | $1.10M | -34.4% | -36.9% | +2.0% |
| 8/24/2022 | CABO | $650K | -41.4% | -39.0% | -3.6% |
| 8/4/2022 | MKL | $60K | +3.3% | +10.3% | +0.7% |
| 5/25/2022 | CABO | $6.52M | -2.6% | -42.9% | +1.2% |
| 5/9/2022 | MKL | $65K | -7.8% | -4.1% | -4.6% |
Computed by MarketWall from SEC Form 4 filings and daily closing prices (close on the purchase date to the close about 3 and 6 months later). Companies that have since delisted are not included. Past results, not investment advice.
Associated companies
Synthesized from recent news and fundamentals/technical data -- not human analyst commentary or trader sentiment.
October 9, 2026
Kaplan ranks No. 1 workplace; enrollment concerns persist. Kaplan, a key Graham Holdings unit, was named the No. 1 Best Workplace in Education and Training for 2026. However, a recent survey indicates admissions officers are worried about a potential enrollment cliff despite a competitive application cycle. The company faces mixed signals from its education segment while maintaining a low valuation.
Synthesized from recent news and fundamentals/technical data -- not human analyst commentary or trader sentiment.
September 27, 2026
S&P Downgrades Cable One to B+ Amid Weakening Broadband Outlook. S&P Global downgraded Cable One to B+ after noting a weaker broadband outlook. The rating reflects concerns about the company’s growth prospects in the telecom market. The downgrade may affect investor perception as the stock trades near its 52‑week low. The move comes while the broader sector sees pressure, as seen in Charter Communications’ recent decline.
Synthesized from recent news and fundamentals/technical data -- not human analyst commentary or trader sentiment.
September 25, 2026
Enovis joins AAOS Registry Program as industry sponsor. Enovis has become the first multi-registry industry sponsor of the AAOS Registry Program. This move highlights the company's engagement with major orthopedic data initiatives. The stock is currently trading near its 52-week low, with an average analyst target of $38.33.
Transaction History
| MKL | ▼ Sell | Tax Withholding | 482 | $888K | 5/15/2026 | View on chart |
| MKL | ▲ Buy | Grant | 4,484 | $0 | 2/24/2026 | View on chart |
| MKL | ▼ Sell | Tax Withholding | 37 | $75K | 12/2/2025 | View on chart |
| MKL | ▲ Buy | Grant | 3,350 | $0 | 2/18/2025 | View on chart |
| MKL | ▲ Buy | Open Market | 100 | $201K | 2/7/2025 | View on chart |
| MKL | ▼ Sell | Tax Withholding | 45 | $79K | 12/5/2024 | View on chart |
| MKL | ▲ Buy | Open Market | 100 | $155K | 11/1/2024 | View on chart |
| GHC | ▲ Buy | Open Market | 100 | $74K | 9/12/2024 | View on chart |
| MKL | ▲ Buy | Grant | 1,041 | $0 | 2/20/2024 | View on chart |
| MKL | ▲ Buy | Grant | 2,710 | $0 | 2/20/2024 | View on chart |
| MKL | ▲ Buy | Open Market | 100 | $141K | 2/2/2024 | View on chart |
| MKL | ▼ Sell | Tax Withholding | 46 | $64K | 12/5/2023 | View on chart |
| GHC | ▲ Buy | Open Market | 100 | $61K | 11/9/2023 | View on chart |
| MKL | ▲ Buy | Open Market | 100 | $131K | 11/3/2023 | View on chart |
| GHC | ▲ Buy | Open Market | 100 | $57K | 9/8/2023 | View on chart |
| MKL | ▲ Buy | Open Market | 100 | $148K | 8/4/2023 | View on chart |
| MKL | ▲ Buy | Grant | 1,068 | $0 | 5/16/2023 | View on chart |
| GHC | ▲ Buy | Open Market | 100 | $58K | 5/9/2023 | View on chart |
| MKL | ▲ Buy | Open Market | 50 | $68K | 5/2/2023 | View on chart |
| CABO | ▲ Buy | Grant | 1 | $0 | 3/10/2023 | View on chart |
| CABO | ▲ Buy | Open Market | 100 | $71K | 3/6/2023 | View on chart |
| MKL | ▲ Buy | Grant | 1,558 | $0 | 2/14/2023 | View on chart |
| MKL | ▲ Buy | Open Market | 25 | $33K | 2/3/2023 | View on chart |
| CABO | ▲ Buy | Grant | 1 | $0 | 12/16/2022 | View on chart |
| MKL | ▼ Sell | Tax Withholding | 43 | $57K | 12/6/2022 | View on chart |
| CABO | ▲ Buy | Open Market | 5,000 | $3.6M | 11/14/2022 | View on chart |
| CABO | ▲ Buy | Open Market | 5,000 | $3.2M | 11/9/2022 | View on chart |
| MKL | ▲ Buy | Open Market | 50 | $62K | 11/8/2022 | View on chart |
| CABO | ▲ Buy | Open Market | 5,000 | $3.4M | 11/8/2022 | View on chart |
| GHC | ▲ Buy | Open Market | 100 | $56K | 9/16/2022 | View on chart |
| CABO | ▲ Buy | Open Market | 500 | $547K | 9/12/2022 | View on chart |
| CABO | ▲ Buy | Open Market | 500 | $553K | 9/6/2022 | View on chart |
| CABO | ▲ Buy | Open Market | 500 | $589K | 8/29/2022 | View on chart |
| CABO | ▲ Buy | Open Market | 50 | $61K | 8/24/2022 | View on chart |
| MKL | ▲ Buy | Open Market | 50 | $60K | 8/4/2022 | View on chart |
| CABO | ▲ Buy | Open Market | 5,000 | $6.5M | 6/1/2022 | View on chart |
| CABO | ▲ Buy | Open Market | 50 | $63K | 5/25/2022 | View on chart |
| CABO | ▲ Buy | Grant | 230 | $0 | 5/20/2022 | View on chart |
| MKL | ▲ Buy | Open Market | 50 | $65K | 5/9/2022 | View on chart |
| MKL | ▲ Buy | Grant | 1,874 | $0 | 2/15/2022 | View on chart |
| ENOV | ▲ Buy | Grant | 490 | $0 | 12/31/2021 | View on chart |
| MKL | ▼ Sell | Tax Withholding | 32 | $40K | 12/7/2021 | View on chart |
| MKL | ▲ Buy | Open Market | 25 | $31K | 11/22/2021 | View on chart |
| GHC | ▲ Buy | Open Market | 100 | $60K | 11/11/2021 | View on chart |
| ENOV | ▲ Buy | Grant | 491 | $0 | 9/30/2021 | View on chart |
AI Market Commentary
AI-generatedAll commentary →Synthesized from recent news and fundamentals/technical data -- not human analyst commentary or trader sentiment.
October 17, 2026
Markel Expands London Marine Team and Launches Canadian Contractor Insurance
Markel Group announced the strengthening of its Marine & Energy Liability team in London through key appointments. Additionally, Markel Canada introduced a dedicated insurance product for contractors and trades businesses. These moves highlight the company's continued focus on expanding its specialized insurance offerings in key international markets.
Markel Expands London Marine Team and Launches Canadian Contractor Insurance. Markel Group announced the strengthening of its Marine & Energy Liability team in London through key appointments. Additionally, Markel Canada introduced a dedicated insurance product for contractors and trades businesses. These moves highlight the company's continued focus on expanding its specialized insurance offerings in key international markets.