John D. Vollaro is Director at ARCH CAPITAL GROUP LTD. (ACGL). They have made 17 open-market trades across 1 company since 2008, most recently 2025-10-30.
CIK 0001304230
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 17 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| ACGL | 194,122 | $19.7M |
Shares reported on the most recent Form 4, priced at the 2025-11-03 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ACGL | SELL | 2019-11-18 | 2019-11-20 | $41.02 | $812K | -1.5% | +3.5% | +16.2% |
| ACGL | SELL | 2019-11-04 | 2019-11-06 | $42.00 | $4K | +0.2% | -0.3% | +8.7% |
| ACGL | SELL | 2019-08-20 | 2019-08-21 | $40.01 | $400K | +0.8% | +3.0% | +4.2% |
| ACGL | SELL | 2019-05-03 | 2019-05-06 | $34.15 | $393K | +1.5% | +4.1% | +11.1% |
| ACGL | SELL | 2018-09-10 | 2018-09-12 | $30.06 | $316K | -0.4% | -9.4% | -9.3% |
| ACGL | SELL | 2017-05-31 | 2017-06-02 | $97.31 | $973K | -4.4% | -4.0% | -1.2% |
| ACGL | SELL | 2017-05-08 | 2017-05-10 | $97.32 | $396K | -0.9% | -2.7% | +2.0% |
| ACGL | SELL | 2017-05-04 | 2017-05-08 | $97.01 | $485K | -1.2% | -1.5% | +0.8% |
| ACGL | SELL | 2017-04-28 | 2017-05-01 | $97.26 | $566K | -1.7% | +0.3% | +0.3% |
| ACGL | SELL | 2017-02-15 | 2017-02-17 | $92.95 | $2.6M | +0.2% | +0.8% | +0.9% |
| ACGL | SELL | 2012-12-11 | 2012-12-12 | $44.37 | $1.4M | -2.8% | +0.0% | +0.0% |
| ACGL | SELL | 2012-05-21 | 2012-05-21 | $38.45 | $231K | -2.8% | +0.0% | +0.0% |
| ACGL | SELL | 2011-05-10 | 2011-05-11 | $102.49 | $758K | -2.8% | +0.0% | +0.0% |
| ACGL | SELL | 2010-05-18 | 2010-05-20 | $75.32 | $301K | -2.8% | +0.0% | +0.0% |
| ACGL | SELL | 2009-06-05 | 2009-06-08 | $59.52 | $208K | -2.8% | +0.0% | +0.0% |
| ACGL | SELL | 2008-10-31 | 2008-11-03 | $69.24 | $5.9M | -2.8% | +0.0% | +0.0% |
| ACGL | SELL | 2008-10-29 | 2008-10-30 | $70.83 | $3.5M | -2.8% | +0.0% | +0.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.