Vault-13

THE ONCOLOGY INSTITUTE INC STLN

COM · Common Stock · CUSIP 68236X100

108 institutional holders +28 vs Q2 2025
34,695,44134.7m shares reported held*
35.3% of all shares outstanding*
$121.1mreported value*
35 new 34 added 23 reduced 6 sold out net bought ≈ $8.5m (+2.4m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($24 this quarter). Holder counts are more reliable. Shares outstanding: 98.4m as of 2025-11-06, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $3.49. Options: 7 managers hold calls ($3.5m notional), 4 hold puts ($108.2k).

Trends to Q3 2025

Institutional holders

Managers reporting a position, each quarter

050100150Q3 22: 39Q4 22: 41Q1 23: 40Q2 23: 39Q3 23: 37Q4 23: 46Q1 24: 48Q2 24: 40Q3 24: 35Q4 24: 32Q1 25: 44Q2 25: 80Q3 25: 108108Q3 22Q2 23Q1 24Q4 24Q3 25
Numbers
QuarterHolders
Q3 202239
Q4 202241
Q1 202340
Q2 202339
Q3 202337
Q4 202346
Q1 202448
Q2 202440
Q3 202435
Q4 202432
Q1 202544
Q2 202580
Q3 2025108

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
1000100Q4 23: 25 bought or addedQ4 23: 12 cut or sold outQ1 24: 21 bought or addedQ1 24: 17 cut or sold outQ1 24Q2 24: 13 bought or addedQ2 24: 25 cut or sold outQ3 24: 13 bought or addedQ3 24: 13 cut or sold outQ3 24Q4 24: 14 bought or addedQ4 24: 11 cut or sold outQ1 25: 23 bought or addedQ1 25: 10 cut or sold outQ1 25Q2 25: 66 bought or addedQ2 25: 10 cut or sold outQ3 25: 69 bought or addedQ3 25: 29 cut or sold outQ3 25
Numbers
QuarterBought or addedCut or sold out
Q4 20232512
Q1 20242117
Q2 20241325
Q3 20241313
Q4 20241411
Q1 20252310
Q2 20256610
Q3 20256929

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$1m$2m$3m$4mQ4 24 calls: $0Q4 24 puts: $0Q4 24P/C —Q1 25 calls: $0Q1 25 puts: $0Q1 25P/C —Q2 25 calls: $0Q2 25 puts: $0Q2 25P/C —Q3 25 calls: $3.5mQ3 25 puts: $108.2kQ3 25P/C 0.03
Numbers
QuarterCallsPutsP/C
Q4 2024$0$0—
Q1 2025$0$0—
Q2 2025$0$0—
Q3 2025$3.5m$108.2k0.03

Biggest buyers

CenterBook Partners LP Added +1,988,751+2.0m
Kanen Wealth Management LLC New +1,842,101+1.8m
UBS Group AG Added +635,489+635.5k
MILLENNIUM MANAGEMENT LLC Added +545,992+546.0k
GOLDMAN SACHS GROUP INC Added +527,011+527.0k
STATE STREET CORP Added +483,768+483.8k
WEXFORD CAPITAL LP Added +452,390+452.4k
Manatuck Hill Partners, LLC Added +380,000+380.0k
BRC Group Holdings, Inc. Added +349,546+349.5k
RENAISSANCE TECHNOLOGIES LLC Added +293,000+293.0k

Biggest sellers

TIFF ADVISORY SERVICES, LLC Reduced -2,777,837-2.8m
JOSH ARNOLD INVESTMENT CONSULTANT, LLC Reduced -2,533,450-2.5m
MARSHALL WACE, LLP Reduced -1,451,782-1.5m
Portolan Capital Management, LLC Sold out -221,512-221.5k
FreeGulliver LLC Reduced -133,800-133.8k
Verition Fund Management LLC Reduced -121,743-121.7k
CITIZENS FINANCIAL GROUP INC/RI Sold out -119,000-119.0k
Bank of New York Mellon Corp Reduced -116,749-116.7k
SUSQUEHANNA INTERNATIONAL GROUP, LLP Sold out -113,676-113.7k
Saba Capital Management, L.P. Sold out -94,264-94.3k

Biggest calls

SIMPLEX TRADING, LLC New $1.4m403.2k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP New $616.0k176.5k shares
JANE STREET GROUP, LLC New $460.3k131.9k shares
GROUP ONE TRADING LLC New $430.3k123.3k shares
Alyeska Investment Group, L.P. New $292.7k83.9k shares
CITADEL ADVISORS LLC New $280.6k80.4k shares
WOLVERINE TRADING, LLC New $60.9k17.6k shares

Biggest puts

SUSQUEHANNA INTERNATIONAL GROUP, LLP New $53.0k15.2k shares
CITADEL ADVISORS LLC New $50.3k14.4k shares
GROUP ONE TRADING LLC New $4.9k1.4k shares
SIMPLEX TRADING, LLC New $0200 shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Insider purchases and sales in Q3 2025

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
10010Q4 23: 1 buyingQ4 23: 1 sellingQ1 24: 0 buyingQ1 24: 0 sellingQ1 24Q2 24: 0 buyingQ2 24: 0 sellingQ3 24: 0 buyingQ3 24: 0 sellingQ3 24Q4 24: 1 buyingQ4 24: 0 sellingQ1 25: 8 buyingQ1 25: 0 sellingQ1 25Q2 25: 0 buyingQ2 25: 2 sellingQ3 25: 0 buyingQ3 25: 2 sellingQ3 25
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20231$127.0k1$174.4k—
Q1 20240—0——
Q2 20240—0——
Q3 20240—0——
Q4 20241$50.0k0——
Q1 20258$1.6m0——
Q2 20250—2$13.4m—
Q3 20250—2$20.8m—
DateInsiderTradeSharesPrice ValueTheir holding
2025-09-04 M33 Growth I L.P. +2 Director Sold 6,018,168 $3.09 $18.6m6.0m shares -43%
2025-09-04 M33 Growth I L.P. +2 Director Sold 681,832 $3.09 $2.1m681.8k shares -54%
2025-08-19 Hively Brad Director Sold 20,221 $4.06 $82.1k20.2k shares -3%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q3 2025

#ManagerLocationShares Value% of their portfolioChangeShares change
1 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 4,545,2454.5m $15.9m $15.9m 0.00% Added +264.4k +264,358
2 BlackRock, Inc. 0.00% of their portfolio New York, NY 3,434,8753.4m $12.0m $12.0m 0.00% Added +128.0k +127,971
3 DEERFIELD MANAGEMENT COMPANY, L.P. 0.18% of their portfolio New York, NY 3,360,0523.4m $11.7m $11.7m 0.18% Unchanged
4 CenterBook Partners LP 0.47% of their portfolio GREENWICH, CT 2,704,6502.7m $9.4m $9.4m 0.47% Added +2.0m +1,988,751
5 Balyasny Asset Management L.P. 0.02% of their portfolio Chicago, IL 2,518,3372.5m $8.8m $8.8m 0.02% Unchanged
6 Kanen Wealth Management LLC 2.15% of their portfolio COCONUT CREEK, FL 1,842,1011.8m $6.4m $6.4m 2.15% New
7 WEXFORD CAPITAL LP 1.65% of their portfolio WEST PALM BEACH, FL 1,571,0691.6m $5.5m $5.5m 1.65% Added +452.4k +452,390
8 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 1,401,9061.4m $4.9m $4.9m 0.00% Added +122.5k +122,463
9 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 1,130,0251.1m $3.9m $3.9m 0.00% Added +483.8k +483,768
10 UBS Group AG 0.00% of their portfolio ZURICH, V8 1,055,8621.1m $3.7m $3.7m 0.00% Added +635.5k +635,489
11 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 951,001951.0k $3.3m $3.3m 0.00% Added +546.0k +545,992
12 TIFF ADVISORY SERVICES, LLC 0.62% of their portfolio RADNOR, PA 856,628856.6k $3.0m $3.0m 0.62% Reduced -2.8m -2,777,837
13 BRC Group Holdings, Inc. 1.99% of their portfolio LOS ANGELES, CA 811,546811.5k $2.8m $2.8m 1.99% Added +349.5k +349,546
14 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 750,500750.5k $2.6m $2.6m 0.00% Added +293.0k +293,000
15 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 681,643681.6k $2.4m $2.4m 0.00% Added +527.0k +527,011
16 Manatuck Hill Partners, LLC 0.75% of their portfolio WESTPORT, CT 629,800629.8k $2.2m $2.2m 0.75% Added +380.0k +380,000
17 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 464,692464.7k $1.6m $1.6m 0.00% Added +53.3k +53,335
18 Massar Capital Management, LP 0.50% of their portfolio STAMFORD, CT 400,000400.0k $1.4m $1.4m 0.50% Unchanged
19 FourWorld Capital Management LLC 3.03% of their portfolio NEW YORK, NY 358,000358.0k $1.2m $1.2m 3.03% Reduced -33.6k -33,650
20 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 278,967279.0k $973.6k $973.6k 0.00% Added +802 +802
21 LPL Financial LLC 0.00% of their portfolio FORT MILL, SC 266,985267.0k $931.8k $931.8k 0.00% New
22 BOOTHBAY FUND MANAGEMENT, LLC 0.02% of their portfolio NEW YORK, NY 247,884247.9k $865.1k $865.1k 0.02% New
23 EHP Funds Inc. 1.12% of their portfolio TORONTO, Z4 244,041244.0k $851.7k $851.7k 1.12% New
24 FreeGulliver LLC 0.33% of their portfolio NEW ORLEANS, LA 210,000210.0k $732.9k $732.9k 0.33% Reduced -133.8k -133,800
25 JOSH ARNOLD INVESTMENT CONSULTANT, LLC 0.57% of their portfolio EDINA, MN 204,250204.2k $712.8k $712.8k 0.57% Reduced -2.5m -2,533,450
26 NKCFO LLC 0.20% of their portfolio GENEVA, IL 190,000190.0k $663.0k $663.0k 0.20% New
27 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 187,534187.5k $654.5k $654.5k 0.00% Added +40.0k +40,000
28 Cubist Systematic Strategies, LLC 0.01% of their portfolio STAMFORD, CT 185,160185.2k $646.2k $646.2k 0.01% Added +150.5k +150,463
29 Informed Momentum Co LLC 0.07% of their portfolio SOLANA BEACH, CA 182,509182.5k $637.0k $637.0k 0.07% Reduced -13.3k -13,328
30 Mount Lucas Management LP 0.25% of their portfolio Newtown, PA 160,500160.5k $560.1k $560.1k 0.25% Added +83.5k +83,500
31 Squarepoint Ops LLC 0.00% of their portfolio NEW YORK, NY 142,554142.6k $497.5k $497.5k 0.00% New
32 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 131,897131.9k $460.3k $460.3k 0.00% Reduced -116.7k -116,749
33 PANAGORA ASSET MANAGEMENT INC 0.00% of their portfolio BOSTON, MA 126,985127.0k $443.2k $443.2k 0.00% Unchanged
34 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 124,888124.9k $435.9k $435.9k 0.00% New
35 ExodusPoint Capital Management, LP 0.01% of their portfolio NEW YORK, NY 115,243115.2k $402.2k $402.2k 0.01% New
36 Maven Securities LTD 0.07% of their portfolio ST HELIER, Y9 100,000100.0k $349.0k $349.0k 0.07% New
37 NATIONAL BANK OF CANADA /FI/ 0.00% of their portfolio MONTREAL, A8 91,44191.4k $320.0k $320.0k 0.00% Added +15.4k +15,428
38 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 91,01691.0k $317.6k $317.6k 0.00% Reduced -84.4k -84,357
39 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 88,48188.5k $308.8k $308.8k 0.00% Added +86.8k +86,846
40 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 85,84785.8k $299.6k $299.6k 0.00% Reduced -17.8k -17,823
41 Jump Financial, LLC 0.00% of their portfolio Chicago, IL 83,40083.4k $291.1k $291.1k 0.00% New
42 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 83,37983.4k $291.0k $291.0k 0.00% Reduced -1.9k -1,852
43 Lee Financial Co 0.04% of their portfolio Dallas, TX 81,36281.4k $284.0k $284.0k 0.04% Unchanged
44 HighTower Advisors, LLC 0.00% of their portfolio CHICAGO, IL 81,36281.4k $284.0k $284.0k 0.00% Unchanged
45 KINGSWOOD WEALTH ADVISORS, LLC 0.02% of their portfolio SAN DIEGO, CA 77,60077.6k $270.8k $270.8k 0.02% Added +13.2k +13,200
46 Nuveen, LLC 0.00% of their portfolio CHARLOTTE, NC 76,67276.7k $267.6k $267.6k 0.00% Unchanged
47 Graham Capital Management, L.P. 0.01% of their portfolio ROWAYTON, CT 72,40872.4k $252.7k $252.7k 0.01% Reduced -13.8k -13,798
48 Fielder Capital Group LLC 0.06% of their portfolio NASHVILLE, TN 70,19270.2k $245.0k $245.0k 0.06% Unchanged
49 WealthShield Partners, LLC 0.03% of their portfolio CARY, NC 70,15470.2k $244.8k $244.8k 0.03% Unchanged
50 Private Advisor Group, LLC 0.00% of their portfolio MORRISTOWN, NJ 68,92268.9k $240.5k $240.5k 0.00% New
51 State of Wyoming 0.03% of their portfolio CHEYENNE, WY 62,98563.0k $219.8k $219.8k 0.03% Added +44.9k +44,937
52 ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio NASHVILLE, TN 61,60061.6k $215.0k $215.0k 0.00% Added +23.6k +23,600
53 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 51,72451.7k $180.5k $180.5k 0.00% Added +25.9k +25,916
54 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 48,85848.9k $170.5k $170.5k 0.00% Added +20.9k +20,923
55 Cetera Investment Advisers 0.00% of their portfolio SCHAUMBURG, IL 45,24545.2k $157.9k $157.9k 0.00% Added +27.7k +27,700
56 AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio Greenwich, CT 44,06544.1k $153.8k $153.8k 0.00% New
57 Diametric Capital, LP 0.06% of their portfolio BOSTON, MA 42,94542.9k $149.9k $149.9k 0.06% New
58 NewEdge Advisors, LLC 0.00% of their portfolio NEW ORLEANS, LA 42,92542.9k $149.8k $149.8k 0.00% New
59 Quadrature Capital Ltd 0.00% of their portfolio LONDON, X0 40,27340.3k $141.2k $141.2k 0.00% Reduced -39.5k -39,480
60 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 38,58738.6k $134.7k $134.7k 0.00% Reduced -121 -121
61 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 38,36738.4k $133.9k $133.9k 0.00% Added +7.9k +7,863
62 RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio ST. PETERSBURG, FL 35,74835.7k $124.8k $124.8k 0.00% Added +33.4k +33,417
63 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 29,76429.8k $104.0k $104.0k 0.00% Unchanged
64 SG Americas Securities, LLC 0.00% of their portfolio NEW YORK, NY 28,34528.3k $99.0k $99.0k 0.00% New
65 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio CAUSEWAY BAY, K3 27,15227.2k $94.8k $94.8k 0.00% Reduced -5.1k -5,108
66 Larson Financial Group LLC 0.00% of their portfolio ST LOUIS, MO 26,28726.3k $91.7k $91.7k 0.00% New
67 MARSHALL WACE, LLP 0.00% of their portfolio LONDON, X0 25,16425.2k $87.8k $87.8k 0.00% Reduced -1.5m -1,451,782
68 O'SHAUGHNESSY ASSET MANAGEMENT, LLC 0.00% of their portfolio Stamford, CT 23,79423.8k $83.0k $83.0k 0.00% New
69 MetLife Investment Management, LLC 0.00% of their portfolio Whippany, NJ 21,63621.6k $75.5k $75.5k 0.00% Reduced -18.3k -18,309
70 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio Toronto, A6 20,79420.8k $72.6k $72.6k 0.00% Reduced -97 -97
71 INTECH INVESTMENT MANAGEMENT LLC 0.00% of their portfolio WEST PALM BEACH, FL 19,60919.6k $68.4k $68.4k 0.00% Reduced -9.0k -9,005
72 Verition Fund Management LLC 0.00% of their portfolio GREENWICH, CT 18,02018.0k $62.9k $62.9k 0.00% Reduced -121.7k -121,743
73 PRUDENTIAL FINANCIAL INC 0.00% of their portfolio NEWARK, NJ 17,73517.7k $61.9k $61.9k 0.00% New
74 Intrua Financial, LLC 0.01% of their portfolio Houston, TX 17,41417.4k $60.8k $60.8k 0.01% New
75 Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio TRENTON, NJ 15,38615.4k $53.7k $53.7k 0.00% Unchanged
76 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 14,96115.0k $52.2k $52.2k 0.00% New
77 SHERBROOKE PARK ADVISERS LLC 0.02% of their portfolio WHITE PLAINS, NY 14,65614.7k $51.1k $51.1k 0.02% New
78 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 13,63313.6k $47.6k $47.6k 0.00% Added +6.0k +5,984
79 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 12,11912.1k $42.3k $42.3k 0.00% Added +7.1k +7,091
80 PRELUDE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio NEW YORK, NY 11,88011.9k $41.5k $41.5k 0.00% New
81 VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio ATLANTA, GA 10,91810.9k $38.1k $38.1k 0.00% Reduced -6.1k -6,073
82 ProShare Advisors LLC 0.00% of their portfolio BETHESDA, MD 10,26110.3k $35.8k $35.8k 0.00% Reduced -1.8k -1,843
83 AMG National Trust Bank 0.00% of their portfolio GREENWOOD VILLAGE, CO 10,00010.0k $34.9k $34.9k 0.00% Unchanged
84 Legal & General Group Plc 0.00% of their portfolio London, X0 6,5766.6k $22.9k $22.9k 0.00% Unchanged
85 Ameritas Investment Partners, Inc. 0.00% of their portfolio LINCOLN, NE 6,0266.0k $21.0k $21.0k 0.00% Unchanged
86 FNY Investment Advisers, LLC 0.01% of their portfolio NEW YORK, NY 6,0006.0k $20.0k $20.0k 0.01% Added +2.0k +2,000
87 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 5,6005.6k $19.5k $19.5k 0.00% Reduced -39.1k -39,100
88 Quantbot Technologies LP 0.00% of their portfolio NEW YORK, NY 4,9264.9k $17.2k $17.2k 0.00% New
89 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 4,8894.9k $17.1k $17.1k 0.00% New
90 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 3,6853.7k $12.9k $12.9k 0.00% Added +2 +2
91 Point72 Europe (London) LLP 0.00% of their portfolio LONDON, X0 3,5723.6k $12.5k $12.5k 0.00% New
92 SBI Securities Co., Ltd. 0.00% of their portfolio TOKYO, M0 3,5003.5k $12.2k $12.2k 0.00% Added +500 +500
93 Caitong International Asset Management Co., Ltd 0.01% of their portfolio HONG KONG, K3 3,2763.3k $11.4k $11.4k 0.01% New
94 Wealthspire Advisors, LLC 0.00% of their portfolio NEW YORK, NY 3,1693.2k $11.1k $11.1k 0.00% New
95 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 2,5502.5k $8.9k $8.9k 0.00% Reduced -18.4k -18,410
96 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 2,2172.2k $7.6k $7.6k 0.00% New
97 AMALGAMATED BANK 0.00% of their portfolio NEW YORK, NY 2,0162.0k $7.0k $7.0k 0.00% Unchanged
98 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 1,5381.5k $5.0k $5.0k 0.00% Reduced -62.8k -62,750
99 Capital Advisors, Ltd. LLC 0.00% of their portfolio SHAKER HEIGHTS, OH 1,2191.2k $4.0k $4.0k 0.00% Unchanged
100 FMR LLC 0.00% of their portfolio BOSTON, MA 626626 $2.2k $2.2k 0.00% Added +107 +107