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DEFINIUM (DFTX)
NASDAQ
$35.56-$0.11 (-0.31%)
Price as of Oct 26, 2026 5:45 PM EDT- $4.8BMarket Cap
- N/A1-Year Change
- BiotechnologyIndustry
DEFINIUM (DFTX)
$35.56-$0.11 (-0.31%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
BLACKROCK, INC. | 8.36% | 11.2M | +2.8M (+24.50%) | Jun 30, 2026 |
AVORO CAPITAL ADVISORS LLC | 5.35% | 7.2M | +2.2M (+30.45%) | Jun 30, 2026 |
DRIEHAUS CAPITAL MANAGEMENT LLC | 5.09% | 6.8M | +933,387 (+13.64%) | Jun 30, 2026 |
JUPITER TOPCO LLC | 4.18% | 5.6M | +5.6M (+100.00%) | Jun 30, 2026 |
N/A | 4.18% | 5.6M | +5.6M (+100.00%) | Jun 30, 2026 |
CAPITAL WORLD INVESTORS | 3.99% | 5.4M | +5.4M (+100.00%) | Jun 30, 2026 |
FMR LLC | 3.54% | 4.8M | +2.9M (+61.93%) | Jun 30, 2026 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
SMALLCAP WORLD FUND INC | 5.72% | 7.7M | +7.7M (+100.00%) | Jun 30, 2026 |
FIDELITY SECURITIES FUND | 1.57% | 2.1M | +882,296 (+41.82%) | Jul 31, 2026 |
FIDELITY SALEM STREET TRUST | 1.30% | 1.7M | +1.6M (+93.01%) | Jul 31, 2026 |
VANGUARD INDEX FUNDS | 1.11% | 1.5M | +390,458 (+26.26%) | Jun 30, 2026 |
T. Rowe Price Health Sciences Fund, Inc. | 0.96% | 1.3M | +1.3M (+100.00%) | Jun 30, 2026 |
T. Rowe Price New Horizons Fund, Inc. | 0.85% | 1.1M | +1.1M (+100.00%) | Jun 30, 2026 |
DRIEHAUS MUTUAL FUNDS | 0.69% | 930,836 | +155,199 (+16.67%) | Jun 30, 2026 |
Current Ownership Distribution
- Institutions198.5M (71.42%)
- Mutual Funds75.1M (27.01%)
- Insiders4.4M (1.57%)
- Other0 (0.00%)
Insider Transactions
- 1.57% (4.4M)Current InsiderOwnership (%, shares)
- 0Number of InsiderBuying (last 12 months)
- $0.00Amount of InsiderBuying (last 12 months)
- 3Number of InsiderSelling (last 12 months)
- $170.5MAmount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
Barrow Robert Chief Executive Officer | Sell | Sep 25, 2026 | $1.2M | 31,550 | $36.57 | 2.2M |
Barrow Robert Chief Executive Officer | Award | Sep 14, 2026 | $0.00 | 750,000 | $0.00 | 2.2M |
Roberts Brandi Chief Financial Officer | Award | Sep 14, 2026 | $0.00 | 125,000 | $0.00 | 397,905 |
Wiley Matthew T. Chief Commercial Officer | Award | Sep 14, 2026 | $0.00 | 125,000 | $0.00 | 362,133 |
Karlin Dan Chief Medical Officer | Award | Sep 14, 2026 | $0.00 | 200,000 | $0.00 | 803,699 |
Barrow Robert Chief Executive Officer | Sell | Sep 03, 2026 | $721,732.62 | 19,023 | $37.94 | 1.5M |
Barrow Robert Chief Executive Officer | Award | Sep 02, 2026 | $0.00 | 40,000 | $0.00 | 1.5M |
Barrow Robert Chief Executive Officer | Award | Aug 12, 2026 | $0.00 | 375,000 | $0.00 | 1.5M |
Wiley Matthew T. Chief Commercial Officer | Award | Aug 12, 2026 | $0.00 | 62,500 | $0.00 | 237,133 |
Karlin Dan Chief Medical Officer | Award | Aug 12, 2026 | $0.00 | 100,000 | $0.00 | 603,282 |
Roberts Brandi Chief Financial Officer | Award | Aug 12, 2026 | $0.00 | 62,500 | $0.00 | 271,987 |
Sullivan Mark Chief Legal Officer | Sell | Jun 25, 2026 | $585,750.24 | 13,008 | $45.03 | 320,571 |
Wiley Matthew T. Chief Commercial Officer | Award | Jun 22, 2026 | $0.00 | 62,500 | $0.00 | 177,500 |
Karlin Dan Chief Medical Officer | Award | Jun 22, 2026 | $0.00 | 100,000 | $0.00 | 513,317 |
Barrow Robert Chief Executive Officer | Award | Jun 22, 2026 | $0.00 | 375,000 | $0.00 | 1.1M |
Sullivan Mark Chief Legal Officer | Award | Jun 22, 2026 | $0.00 | 62,500 | $0.00 | 333,579 |
Roberts Brandi Chief Financial Officer | Award | Jun 22, 2026 | $0.00 | 62,500 | $0.00 | 212,500 |
Krebs Andreas | Award | Jun 11, 2026 | $0.00 | 19,188 | $0.00 | 19,188 |
CRYSTAL ROGER | Award | Jun 11, 2026 | $0.00 | 19,188 | $0.00 | 19,188 |
GRYSKA DAVID W | Award | Jun 11, 2026 | $0.00 | 19,188 | $0.00 | 19,188 |
Adsett Roger | Award | Jun 11, 2026 | $0.00 | 14,620 | $0.00 | 14,620 |
Bruhn Suzanne Louise | Award | Jun 11, 2026 | $0.00 | 19,188 | $0.00 | 19,188 |
CRYSTAL ROGER | Award | Jun 11, 2026 | $0.00 | 4,666 | $0.00 | 24,289 |
GRYSKA DAVID W | Award | Jun 11, 2026 | $0.00 | 4,666 | $0.00 | 19,900 |
Adsett Roger | Award | Jun 11, 2026 | $0.00 | 3,555 | $0.00 | 3,555 |
Krebs Andreas | Award | Jun 11, 2026 | $0.00 | 4,666 | $0.00 | 19,773 |
Bruhn Suzanne Louise | Award | Jun 11, 2026 | $0.00 | 4,666 | $0.00 | 24,289 |
Vallone Carol A | Award | Jun 11, 2026 | $0.00 | 19,188 | $0.00 | 19,188 |
Vallone Carol A | Award | Jun 11, 2026 | $0.00 | 4,666 | $0.00 | 21,210 |
Barrow Robert Chief Executive Officer | Sell | Mar 25, 2026 | $451,240.57 | 24,431 | $18.47 | 752,454 |