GIM
ONT

Granahan Investment Management’s Onterris Inc ONT Stock Holding History

Granahan Investment Management’s Portfolio ONT Stock Details ONT Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$5.25M Buy
259,703
+17,916
+7% +$334K 0.19% 112
2026
Q1 		$5.29M Buy
241,787
+42,470
+21% +$1.02M 0.26% 101
2025
Q4 		$4.95M Buy
199,317
+108,577
+120% +$2.87M 0.21% 108
2025
Q3 		$2.49M Buy
+90,740
New +$2.37M 0.1% 125
2024
Q4 		– Sell
-556,057
Closed -$14.6M – 193
2024
Q3 		$14.6M Buy
556,057
+72,757
+15% +$2.35M 0.58% 48
2024
Q2 		$21.5M Buy
+483,300
New +$21.7M 0.86% 32

Other funds holding ONT

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
BAMCO Inc
BAMCO Inc New York $66.6B AUM 7.35% 1-Year Est. Return
NAMI
Nomura Asset Management International Philadelphia, Pennsylvania $66.6B AUM
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
CM
Corvex Management New York $3.27B AUM 38.53% 1-Year Est. Return
AllianceBernstein
AllianceBernstein Nashville, Tennessee $302B AUM 26.44% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
UBS AM
UBS AM Chicago, Illinois $550B AUM 43.33% 1-Year Est. Return
Nomura Holdings
Nomura Holdings Tokyo, Japan $85.4B AUM 91.09% 1-Year Est. Return

Granahan Investment Management's ONT Position: Q2 2026 in Review

Granahan Investment Management increased its Onterris Inc (ONT) stake by 7.4% in Q2 2026, buying an estimated $334K and bringing the position to 259,703 shares worth $5.25M. The position accounts for 0.19% of the portfolio, ranked #112.

Granahan Investment Management first reported a position in ONT in Q2 2024 and has held it in 6 quarters since. The position peaked at $21.5M in Q2 2024. 157 funds tracked by Wall St. Rank hold ONT as of Q2 2026.

  • Granahan Investment Management held 259,703 shares of Onterris Inc worth $5.25M as of Q2 2026.
  • Granahan Investment Management bought 17,916 Onterris Inc shares in Q2 2026, an estimated $334K.
  • Onterris Inc made up 0.19% of Granahan Investment Management's portfolio in Q2 2026, its #112 holding.
  • Granahan Investment Management first reported a position in Onterris Inc in Q2 2024 and has held it in 6 quarters since.
  • Granahan Investment Management's Onterris Inc position peaked at $21.5M in Q2 2024.
  • 157 funds tracked by Wall St. Rank held Onterris Inc as of Q2 2026.

Based on Granahan Investment Management's 13F filing for Q2 2026, filed 14 Aug 2026.