| $350M | ||
| $217M | ||
| $172M | ||
| $109M | ||
| $104M | ||
| $100M |
Buys | $106,601,464 | 13 | 32 |
Sells | $21,102,049 | 28 | 68 |
| Meister Keith A. | 8 | $74.03M | 0 | $0 | $74.03M | |
| Casdin Capital, LLC | 5 | $32.57M | 0 | $0 | $32.57M | |
| Dechairo Bryan | Chief Operating Officer | 0 | $0 | 2 | $850,556 | $-850,556 |
| Feeley Kevin | CHIEF FINANCIAL OFFICER | 0 | $0 | 14 | $3.26M | $-3.26M |
| RUCH JOSHUA | director | 0 | $0 | 1 | $6.09M | $-6.09M |
| Stueland Katherine | CHIEF EXECUTIVE OFFICER | 0 | $0 | 11 | $10.89M | $-10.89M |
GeneDx Holdings Corp., a genomics company, provides genetic testing services. The company primarily offers pediatric and rare disease diagnostics with a focus on whole exome and genome sequencing, as well as data and information services. It also develops an AI-based platform for next generation sequencing analysis, interpretation, and clinical reporting for rare disease, hereditary risk, and cancer testing. GeneDx Holdings Corp. was founded in 2000 and is headquartered in Stamford, Connecticut.
Over the last 12 months, insiders at GeneDx Holdings Corp. have bought $106.6M and sold $21.1M worth of GeneDx Holdings Corp. stock.
On average, over the past 5 years, insiders at GeneDx Holdings Corp. have bought $57.25M and sold $47.98M worth of stock each year.
Highest buying activity among insiders over the last 12 months: Meister Keith A. () — $74.03M. Casdin Capital, LLC () — $32.57M.
The last purchase of 50,000 shares for transaction amount of $2.64M was made by Casdin Capital, LLC () on 2026‑06‑05.
| 2026-09-16 | Sale | Stueland Katherine | CHIEF EXECUTIVE OFFICER | 10,501 0.0353% | $97.61 | $1.03M | -29.17% | |
| 2026-09-16 | Sale | Feeley Kevin | CHIEF FINANCIAL OFFICER | 3,728 0.0125% | $97.61 | $363,892 | -29.17% | |
| 2026-09-09 | Sale | Stueland Katherine | CHIEF EXECUTIVE OFFICER | 3,692 0.0121% | $84.22 | $310,932 | -17.95% | |
| 2026-09-09 | Sale | Feeley Kevin | CHIEF FINANCIAL OFFICER | 1,285 0.0042% | $84.22 | $108,220 | -17.95% | |
| 2026-09-01 | Sale | Feeley Kevin | CHIEF FINANCIAL OFFICER | 372 0.0012% | $83.84 | $31,188 | -15.21% | |
| 2026-06-16 | Sale | Stueland Katherine | CHIEF EXECUTIVE OFFICER | 10,501 0.0355% | $60.77 | $638,104 | +14.84% | |
| 2026-06-16 | Sale | Feeley Kevin | CHIEF FINANCIAL OFFICER | 3,729 0.0126% | $60.77 | $226,597 | +14.84% | |
| 2026-06-09 | Sale | Stueland Katherine | CHIEF EXECUTIVE OFFICER | 3,639 0.0117% | $53.77 | $195,669 | +22.65% | |
| 2026-06-09 | Sale | Feeley Kevin | CHIEF FINANCIAL OFFICER | 1,266 0.0041% | $53.77 | $68,073 | +22.65% | |
| 2026-06-05 | Casdin Capital, LLC | 50,000 0.1705% | $52.86 | $2.64M | +32.18% | |||
| 2026-06-04 | Casdin Capital, LLC | 150,000 0.5068% | $56.44 | $8.47M | +22.55% | |||
| 2026-05-20 | Casdin Capital, LLC | 140,000 0.4903% | $43.81 | $6.13M | +53.48% | |||
| 2026-05-19 | Casdin Capital, LLC | 185,000 0.63% | $42.60 | $7.88M | +62.94% | |||
| 2026-05-18 | Casdin Capital, LLC | 175,000 0.5876% | $42.55 | $7.45M | +60.79% | |||
| 2026-05-15 | Meister Keith A. | 46,273 0.1561% | $38.91 | $1.8M | +68.40% | |||
| 2026-05-14 | Meister Keith A. | 140,000 0.4781% | $39.39 | $5.51M | +76.60% | |||
| 2026-05-13 | Meister Keith A. | 165,000 0.5579% | $39.09 | $6.45M | +76.09% | |||
| 2026-05-11 | Meister Keith A. | 500,000 1.6704% | $39.29 | $19.64M | +72.17% | |||
| 2026-05-08 | Meister Keith A. | 171,389 0.5748% | $40.59 | $6.96M | +66.45% | |||
| 2026-05-07 | Meister Keith A. | 533,758 1.6806% | $37.86 | $20.21M | +67.40% |
| Meister Keith A. | 4784570 16.0435% | $328.41M | 11 | 2 | +27.01% | |
| Casdin Capital, LLC | 3707164 12.4308% | $254.46M | 14 | 1 | +233.16% | |
| Stueland Katherine | CHIEF EXECUTIVE OFFICER | 115476 0.3872% | $7.93M | 1 | 51 | <0.0001% |
| MOUNT SINAI HEALTH SYSTEM, INC. | 94605473 317.2285% | $6.49B | 1 | 0 | <0.0001% | |
| Casdin Eli | 87866042 294.63% | $6.03B | 2 | 0 | <0.0001% | |
| ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI | 10 percent owner | 2719692 9.1196% | $186.68M | 1 | 3 | <0.0001% |
| OPKO HEALTH, INC. | 10 percent owner | 2646972 8.8758% | $181.69M | 1 | 19 | <0.0001% |
| SCHWARZMAN STEPHEN A | 555497 1.8627% | $38.13M | 1 | 0 | <0.0001% | |
| Blackstone Tactical Opportunities Fund - FD L.P. | 555497 1.8627% | $38.13M | 1 | 0 | <0.0001% | |
| Schadt Eric | President & Chief R&D Officer | 243380 0.8161% | $16.71M | 1 | 3 | <0.0001% |
| PFENNIGER RICHARD C JR | director | 20918 0.0701% | $1.44M | 3 | 0 | +420.46% |
| Ryan Jason | director | 11904 0.0399% | $817,090.56 | 2 | 6 | +1256.88% |
$13,470,814 | 657 | -0.42% | $35.64M | |
$78,162,120 | 207 | 10.26% | $241.09M | |
$26,663,659 | 7 | -12.13% | $56.02B | |
$66,999 | 2 | -47.60% | $5.87M | |
$99,997 | 1 | -77.35% | $20.04M |
| Increased Positions | 152 | +48.1% | 4M | +14.2% |
| Decreased Positions | 142 | -44.94% | 3M | -10.99% |
| New Positions | 59 | New | 904,307 | New |
| Sold Out Positions | 42 | Sold Out | 705,471 | Sold Out |
| Total Postitions | 326 | +3.16% | 31M | +3.21% |
| Corvex Management Lp | $404,657.00 | 10.55% | 3.06M | 0 | 0% | 2025-09-30 |
| Casdin Capital, Llc | $397,848.00 | 10.37% | 3.01M | -500,000 | -14.26% | 2025-09-30 |
| Blackrock, Inc. | $202,297.00 | 5.27% | 1.53M | +94,441 | +6.58% | 2025-09-30 |
| William Blair Investment Management, Llc | $161,424.00 | 4.21% | 1.22M | -411,264 | -25.21% | 2025-09-30 |
| Vanguard Group Inc | $154,847.00 | 4.04% | 1.17M | -10,501 | -0.89% | 2025-09-30 |
| Goldman Sachs Group Inc | $154,550.00 | 4.03% | 1.17M | +118,739 | +11.31% | 2025-09-30 |
| Oracle Investment Management Inc | $117,741.00 | 3.07% | 889,954 | -32,500 | -3.52% | 2025-09-30 |
| Summit Partners Public Asset Management, Llc | $108,958.00 | 2.84% | 823,567 | +56,302 | +7.34% | 2025-09-30 |
| T. Rowe Price Investment Management, Inc. | $94,992.00 | 2.48% | 718,003 | -319,113 | -30.77% | 2025-09-30 |
| Franklin Resources Inc | $90,147.00 | 2.35% | 681,381 | +343,954 | +101.93% | 2025-09-30 |