AKTSAktis Oncology, Inc.

$18.14

Who owns AKTS

113 institutions reported holding AKTS for 2026Q2, together 70% of the company, more than the 69 a quarter earlier.

113

Institutions reporting a position · as of 2026Q2 · up from 69 the quarter before

Shares held by institutions
34.2M

Shares held by institutions · 70% of the company · long US equity positions only, as reported on Form 13F

Reported value
$1.10B

Reported value · at Jun 30, 2026 prices, not today's

Top 5 holders
35%

Top 5 holders · of the whole company, between five filers

Details›
Reporting quarter2026-06-30
2026Q2
Quarters on record
2
New positions
52
Positions exited
8
Added to
27
Reduced
15
Top 10 holdersof the company
50%
Shares sold shortsettled Sep 15, 2026
3.3M
Short interestof shares outstanding
6.7%
Days to coverat the average daily volume
11.5
Change in the short positionsince the Aug 31, 2026 count
+2.4%
Largest reported holders, 2026Q2
HolderShares% of companyValue
MPM BIOIMPACT LLC4.8M9.9%$156M
EcoR1 Capital, LLC4.8M9.9%$155M
Blue Owl Capital Holdings LP3.1M6.3%$99M
BlackRock Inc.2.3M4.7%$73M
T. Rowe Price Investment Management, Inc.2.1M4.2%$66M
WELLINGTON MANAGEMENT GROUP LLP2.0M4.0%$63M
RTW INVESTMENTS, LP1.6M3.3%$51M
RA CAPITAL MANAGEMENT, L.P.1.3M2.7%$42M
Jupiter Topco LLC1.3M2.7%$42M
VANGUARD GROUP INC1.1M2.3%$36M
Short interest by settlement date, Jan 15, 2026 to Sep 15, 2026
SettlementShares shortOf shares outstandingDays to cover
Sep 15, 20263.3M6.7%11.5
Aug 31, 20263.2M6.5%10.4
Aug 14, 20263.4M7.1%15.0
Jul 31, 20263.5M7.1%12.8
Jul 15, 20263.7M7.7%6.3
Jun 30, 20263.3M6.8%5.0
Jun 15, 20262.9M6.0%11.6
May 29, 20262.7M5.5%18.4
May 15, 20262.5M5.2%16.7
Apr 30, 20262.6M5.3%10.0
Apr 15, 20262.3M4.8%8.4
Mar 31, 20262.3M4.8%3.0

SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold. The short position is FINRA's consolidated count for each twice-monthly settlement date, as a share of shares outstanding.

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