Oncology Institute Ownership | Who Owns Oncology Institute?


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Oncology Institute Ownership Summary


Oncology Institute is owned by 3.15% institutional investors, 8.88% insiders, and 87.97% retail investors. Kent lake capital is the largest institutional shareholder, holding 2.36% of TOI shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 3.05% of its assets in Oncology Institute shares.

TOI Ownership Benchmark


TypeName% Inst% Insiders% Retail
StockOncology Institute3.15%8.88%87.97%
SectorHealthcare Stocks 487.91%11.08%-398.99%
IndustryMedical Care Facilities Stocks75.76%12.33%11.91%

Institutional Shareholders


Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Kent lake capital1.75M2.36%$805.00K
Vanguard group1.75M2.32%$542.11K
Triatomic management lp802.97K1.08%$369.36K
Freegulliver600.75K0.80%$185.63K
Geode capital management347.35K0.46%$107.36K
Tiff advisory services3.63M0.39%$7.45M
Citadel advisors269.70K0.36%$124.06K
Deerfield management company, l.p. (series c)3.36M0.36%$6.89M
Blackrock funding, inc. /de3.31M0.35%$6.78M
Fourworld capital management257.00K0.34%$79.41K

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Triatomic management lp802.97K10.89%$369.36K
Tiff advisory services3.63M1.76%$7.45M
Wexford capital lp1.12M0.64%$2.29M
Josh arnold investment consultant291.15K0.56%$596.86K
Kent lake capital1.75M0.36%$805.00K
Manatuck hill partners249.80K0.19%$512.09K
Deerfield management company, l.p. (series c)3.36M0.13%$6.89M
Freegulliver600.75K0.09%$185.63K
Mount lucas management lp77.00K0.07%$157.85K
Fourworld capital management257.00K0.04%$79.41K

Top Buyers

HolderShares% AssetsChange
Blackrock funding, inc. /de3.31M0.00%3.04M
Marshall wace, llp1.48M0.00%1.48M
Wexford capital lp1.12M0.64%1.12M
Tiff advisory services3.63M1.76%655.32K
Kent lake capital1.75M0.36%563.29K

Top Sellers

HolderShares% AssetsChange
Fmr---4.75M
Josh arnold investment consultant291.15K0.56%-1.70M
Cincinnati insurance---1.24M
Element pointe advisors---199.03K
Quattro financial advisors---162.72K

New Positions

HolderShares% AssetsChangeValue
Marshall wace, llp1.48M0.00%1.48M$3.03M
Wexford capital lp1.12M0.64%1.12M$2.29M
Portolan capital management221.51K0.03%221.51K$454.10K
Verition fund management139.76K0.00%139.76K$286.51K
Graham capital management86.21K0.00%86.21K$176.72K

Sold Out

HolderChange
Wells fargo & company/mn-248.00
Boston financial mangement-2.68K
Kirr marbach & co llc /in/-2.73K
Deutsche bank ag\-9.44K
Mariner-10.88K

Institutional Ownership Trends


DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Jun 30, 20257885.71%29,319,38273.47%365.45%64178.26%5-28.57%
Mar 31, 20254240.00%16,901,93214.88%20.58%2376.92%7133.33%
Dec 31, 202418-47.06%8,865,387-56.94%111.58%8-46.67%3-57.14%
Sep 30, 202433-15.38%20,426,9709.22%274.26%147.69%7-46.15%
Jun 30, 202439-15.22%18,701,8668.37%254.60%13-38.10%1318.18%

Top Mutual Funds Shareholders


HolderShares% HoldingChange
Vanguard Total Stock Mkt Idx Inv2.84M3.05%-145.90K
Fidelity Growth Compy Commingled Pl S2.05M2.72%2.05M
Fidelity Growth Company Fund1.80M2.38%1.80M
iShares Russell 2000 ETF1.47M1.57%-
Fidelity Small Cap Index592.10K0.63%592.10K
Vanguard Institutional Extnd Mkt Idx Tr546.96K0.59%-249.23K
Fidelity Growth Company K6431.19K0.57%431.19K
iShares Russell 2000 Growth ETF510.21K0.55%-
Fidelity Series Growth Company377.38K0.50%377.38K
State St Russell Sm/Mid Cp® Indx SL Cl I303.31K0.33%303.31K

Recent Insider Transactions


DateNameRoleActivityValue
Sep 04, 2025M33 Growth I L.P. Sell$18.60M
Sep 04, 2025M33 Growth I L.P. Sell$2.11M
Aug 19, 2025Hively Brad-Sell$82.10K
Jun 05, 2025M33 Growth I L.P. Sell$2.05M
Jun 05, 2025M33 Growth I L.P. Sell$232.79K

Insider Transactions Trends


DateBuySell
2025 Q3-3
2025 Q2-6
2025 Q118-
2024 Q42-
2024 Q3--

TOI Ownership FAQ


Who Owns Oncology Institute?

Oncology Institute shareholders are primarily institutional investors at 3.15%, followed by 8.88% insiders and 87.97% retail investors. The average institutional ownership in Oncology Institute's industry, Medical Care Facilities Stocks, is 75.76%, which Oncology Institute falls below.

Who owns the most shares of Oncology Institute?

Oncology Institute’s largest shareholders are Kent lake capital (1.75M shares, 2.36%), Vanguard group (1.75M shares, 2.32%), and Triatomic management lp (802.96K shares, 1.08%). Together, they hold 5.76% of Oncology Institute’s total shares outstanding.

Does Blackrock own Oncology Institute?

BlackRock is not among the top 10 institutional shareholders of Oncology Institute.

Who is Oncology Institute’s biggest shareholder by percentage of total assets invested?

Triatomic management lp is Oncology Institute’s biggest shareholder by percentage of total assets invested, with 10.89% of its assets in 802.96K Oncology Institute shares, valued at 369.36K$.

Who is the top mutual fund holder of Oncology Institute shares?

Vanguard Total Stock Mkt Idx Inv is the top mutual fund holder of Oncology Institute shares, with 3.05% of its total shares outstanding invested in 2.84M Oncology Institute shares.

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