Steven Gillis is Director at bluebird bio, Inc. (BLUE). They have made 12 open-market trades across 8 companies since 2006, most recently 2026-07-01.
CIK 0001229592
9 open-market purchases totalling $70.3M since 2006, against 3 sales. Across 8 scored buys the stock is up 10.4% at ninety days, and 6.1 points ahead of the S&P over the same stretch.
8 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 25% | 25% | 38% |
| Avg Move | -6.5% | -8.0% | +10.4% |
| Alpha | -5.8% | -8.5% | +6.1% |
| Scored | 8 | 8 | 8 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| PRME | BUY | 2025-08-01 | 2025-08-01 | $3.30 | $10.0M | -12.4% | -28.3% | +0.0% |
| MTSR | BUY | 2025-02-03 | 2025-02-03 | $18.00 | $40.0M | +6.6% | -6.2% | -14.8% |
| BOLD | BUY | 2024-04-02 | 2024-04-04 | $16.00 | $3.2M | -20.8% | -26.5% | -68.2% |
| VBIV | BUY | 2023-07-10 | 2023-07-18 | $1.65 | $2.0M | -8.3% | -11.8% | -61.7% |
| CDAK | BUY | 2020-10-16 | 2020-10-20 | $15.00 | $3.5M | -26.6% | -30.3% | +142.0% |
| VBIV | BUY | 2019-09-19 | 2019-09-23 | $0.50 | $5.0M | -2.2% | +11.2% | +124.3% |
| SNNA | BUY | 2019-02-22 | 2019-02-26 | $2.50 | $5.0M | -1.6% | -8.3% | -47.6% |
| VBIV | BUY | 2017-10-30 | 2017-10-31 | $3.05 | $915K | +13.2% | +35.9% | +9.5% |
| BLUE | SELL | 2014-10-09 | 2014-10-14 | $35.25 | $4.1M | -26.5% | +1.0% | +1.0% |
| BLUE | SELL | 2014-10-03 | 2014-10-07 | $35.43 | $2.0M | -26.5% | +1.0% | +1.0% |
| BLUE | SELL | 2014-09-30 | 2014-10-02 | $35.28 | $3.2M | -26.5% | +1.0% | +1.0% |
| TRBN | BUY | 2006-10-18 | 2006-10-20 | $13.00 | $580K | N/A | N/A | N/A |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.
| VBIV |
| 1,043,292 |
| $68K |
| CDAK | 8,750 | $499 |
| TRBN | 2,312,406 | — |
| Total | $1.3B |
Shares reported on the most recent Form 4, priced at the 2026-07-06 close. 1 holding could not be priced and is excluded from the total.