ONCOLOGY INSTITUTE INC/THE (TOI) Top Institutional Shareholders
ONCOLOGY INSTITUTE INC/THE (TOI) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $117.64M in TOI holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of TOI tracked by InsiderSet, reporting ownership valued at approximately $13.56M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $23.18M, representing an estimated gain of +71.01% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 65% of the total disclosed TOI value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Capital Management Llc, Deerfield Management Company, L.P., and several other long-term asset managers with concentrated positions in ONCOLOGY INSTITUTE INC/THE (TOI).
This page ranks the largest institutional TOI shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
114
Total Reported Value
$117.64M
Largest Holder
Blackrock, Inc.
Largest Position
$13.56M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
140
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 4,415,867 | $13,556,712 | $23,183,302 | +$9,626,590 | +71.01% | |
| Vanguard Capital Management Llc | 0.00% | 3,476,781 | $10,673,718 | $18,253,100 | +$7,579,382 | +71.01% | |
| Deerfield Management Company, L.P. | 0.12% | 3,360,052 | $10,315,360 | $17,640,273 | +$7,324,913 | +71.01% | |
| Kanen Wealth Management Llc | 3.07% | 2,777,858 | $8,528,024 | $14,583,755 | +$6,055,731 | +71.01% | |
| Josh Arnold Investment Consultant, Llc | 6.47% | 2,464,359 | $7,565,582 | $12,937,885 | +$5,372,303 | +71.01% | |
| Balyasny Asset Management L.P. | 0.01% | 1,826,370 | $5,606,956 | $9,588,443 | +$3,981,487 | +71.01% | |
| Geode Capital Management, Llc | 0.00% | 1,757,847 | $5,397,829 | $9,228,697 | +$3,830,868 | +70.97% | |
| Wexford Capital Lp | 0.87% | 1,711,323 | $5,253,762 | $8,984,446 | +$3,730,684 | +71.01% | |
| Centerbook Partners Lp | 0.26% | 1,568,423 | $4,815,059 | $8,234,221 | +$3,419,162 | +71.01% | |
| State Street Corp | 0.00% | 1,461,454 | $4,486,664 | $7,672,634 | +$3,185,970 | +71.01% | |
| Goldman Sachs Group Inc | 0.00% | 1,351,899 | $4,150,330 | $7,097,470 | +$2,947,140 | +71.01% | |
| Brc Group Holdings, Inc. | 0.63% | 929,734 | $2,854,283 | $4,881,104 | +$2,026,821 | +71.01% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 902,809 | $2,771,624 | $4,739,747 | +$1,968,123 | +71.01% |
| Vanguard Portfolio Management Llc | 0.00% | 862,839 | $2,648,916 | $4,529,905 | +$1,880,989 | +71.01% | |
| Ensign Peak Advisors, Inc | 0.00% | 626,852 | $1,924,436 | $3,290,973 | +$1,366,537 | +71.01% | |
| Citadel Advisors Llc | 0.00% | 608,267 | $1,867,380 | $3,193,402 | +$1,326,022 | +71.01% | |
| Ubs Group Ag | 0.00% | 574,652 | $1,764,182 | $3,016,923 | +$1,252,741 | +71.01% | |
| Northern Trust Corp | 0.00% | 558,455 | $1,714,457 | $2,931,889 | +$1,217,432 | +71.01% | |
| Fourworld Capital Management Llc | 0.83% | 499,196 | $1,532,532 | $2,620,779 | +$1,088,247 | +71.01% | |
| Vanguard Fiduciary Trust Co | 0.00% | 483,060 | $1,482,994 | $2,536,065 | +$1,053,071 | +71.01% | |
| Dauntless Investment Group, Llc | 3.99% | 462,057 | $1,418,515 | $2,425,799 | +$1,007,284 | +71.01% | |
| Jane Street Group, Llc | 0.00% | 424,894 | $1,304,424 | $2,230,694 | +$926,270 | +71.01% | |
| Arrowstreet Capital, Limited Partnership | 0.00% | 419,423 | $1,287,629 | $2,201,971 | +$914,342 | +71.01% | |
| Marshall Wace, Llp | 0.00% | 342,265 | $1,050,753 | $1,796,891 | +$746,138 | +71.01% | |
| Two Sigma Investments, Lp | 0.00% | 307,754 | $944,805 | $1,615,709 | +$670,904 | +71.01% | |
| Mount Lucas Management Lp | 0.28% | 250,000 | $767,500 | $1,312,500 | +$545,000 | +71.01% | |
| Centiva Capital, Lp | 0.03% | 224,245 | $688,432 | $1,177,286 | +$488,854 | +71.01% | |
| Charles Schwab Investment Management Inc | 0.00% | 214,915 | $659,789 | $1,128,304 | +$468,515 | +71.01% | |
| Tiff Advisory Services, Llc | 0.13% | 195,469 | $564,905 | $1,026,212 | +$461,307 | +81.66% | |
| Morgan Stanley | 0.00% | 171,940 | $527,855 | $902,685 | +$374,830 | +71.01% | |
| Bank Of New York Mellon Corp | 0.00% | 162,442 | $498,697 | $852,821 | +$354,124 | +71.01% | |
| Boothbay Fund Management, Llc | 0.01% | 137,792 | $423,021 | $723,408 | +$300,387 | +71.01% | |
| Millennium Management Llc | 0.00% | 131,522 | $403,773 | $690,491 | +$286,718 | +71.01% | |
| Cetera Investment Advisers | 0.00% | 128,195 | $393,559 | $673,024 | +$279,465 | +71.01% | |
| Jump Financial, Llc | 0.01% | 116,430 | $357,440 | $611,258 | +$253,818 | +71.01% | |
| T3 Companies, Llc | 0.47% | 111,900 | $343,533 | $587,475 | +$243,942 | +71.01% | |
| State Of Wyoming | 0.04% | 103,617 | $318,104 | $543,989 | +$225,885 | +71.01% | |
| Kingswood Wealth Advisors, Llc | 0.02% | 103,200 | $316,824 | $541,800 | +$224,976 | +71.01% | |
| Nuveen, Llc | 0.00% | 95,264 | $292,460 | $500,136 | +$207,676 | +71.01% | |
| Private Advisor Group, Llc | 0.00% | 94,170 | $289,104 | $494,393 | +$205,289 | +71.01% | |
| Susquehanna International Group, Llp | 0.00% | 92,869 | $285,108 | $487,562 | +$202,454 | +71.01% | |
| Xtx Topco Ltd | 0.00% | 90,346 | $277,362 | $474,317 | +$196,955 | +71.01% | |
| Hightower Advisors, Llc | 0.00% | 83,919 | $257,631 | $440,575 | +$182,944 | +71.01% | |
| Lee Financial Co | 0.04% | 81,362 | $249,782 | $427,151 | +$177,369 | +71.01% | |
| Aquatic Capital Management Llc | 0.01% | 78,468 | $240,897 | $411,957 | +$171,060 | +71.01% | |
| Rhumbline Advisers | 0.00% | 77,845 | $238,977 | $408,686 | +$169,709 | +71.01% | |
| Alliancebernstein L.P. | 0.00% | 61,600 | $219,296 | $323,400 | +$104,104 | +47.47% | |
| Fielder Capital Group Llc | 0.05% | 70,192 | $215,489 | $368,508 | +$153,019 | +71.01% | |
| Wealthshield Partners, Llc | 0.02% | 70,154 | $215,373 | $368,309 | +$152,936 | +71.01% | |
| Bank Of America Corp | 0.00% | 63,439 | $194,758 | $333,055 | +$138,297 | +71.01% |
Frequently asked questions about TOI
Who owns the most TOI stock?
The largest holders of TOI are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for ONCOLOGY INSTITUTE INC/THE (TOI).
Is TOI widely held by superinvestors?
Many widely followed stocks like TOI appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly TOI is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.