The Oncology Institute, Inc.
US ˙ NasdaqCM ˙ US68236X1000

SecurityTOI / The Oncology Institute, Inc.
InstitutionVanguard Group Inc
Latest Disclosed Ownership4,748,635 shares
Latest Disclosed Value $ 16,905,141
Vanguard Group Inc reports 4.47% increase in ownership of TOI / The Oncology Institute, Inc.

On January 29, 2026 - Vanguard Group Inc filed a 13F-HR form disclosing ownership of 4,748,635 shares of The Oncology Institute, Inc. (US:TOI) valued at $16,905,141 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 7, 2025 disclosing 4,545,245 shares of The Oncology Institute, Inc.. This represents a change in shares of 4.47% during the quarter. The current value of the position is $23,125,852 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-01-29 2025-12-31 13F THE ONCOLOGY INSTITUTE COM 68236X100 4,748,635 203,390 4.47 16,905 6.58 0.0002
2025-11-07 2025-09-30 13F THE ONCOLOGY INSTITUTE COM 68236X100 4,545,245 264,358 6.18 15,863 80.76 0.0002
2025-08-11 2025-06-30 13F THE ONCOLOGY INSTITUTE COM 68236X100 4,280,887 2,530,173 144.52 8,776 339.85 0.0001
2025-05-09 2025-03-31 13F THE ONCOLOGY INSTITUTE COM 68236X100 1,750,714 -3,672 -0.21 1,996 268.08 0.0000
2025-02-11 2024-12-31 13F THE ONCOLOGY INSTITUTE COM 68236X100 1,754,386 -29,068 -1.63 542 -7.03 0.0000
2024-11-13 2024-09-30 13F THE ONCOLOGY INSTITUTE COM 68236X100 1,783,454 0 0.00 583 -28.90 0.0000
2024-08-13 2024-06-30 13F THE ONCOLOGY INSTITUTE COM 68236X100 1,783,454 0 0.00 820 -70.89 0.0000
2024-05-10 2024-03-31 13F THE ONCOLOGY INSTITUTE COM 68236X100 1,783,454 6,061 0.34 2,818 -22.29 0.0001
2024-03-11 2023-12-31 13F/A-1 THE ONCOLOGY INSTITUTE COM 68236X100 1,777,393 19,359 1.10 3,626 47.30 0.0001
2024-02-14 2023-12-31 13F THE ONCOLOGY INSTITUTE COM 68236X100 1,777,393 19,359 3,626 0.0001
2023-12-18 2023-09-30 13F/A-1 THE ONCOLOGY INSTITUTE COM 68236X100 1,758,034 -4,916 -0.28 2,461 153.97 0.0001
2023-11-14 2023-09-30 13F THE ONCOLOGY INSTITUTE COM 68236X100 1,758,034 -4,916 2,461 0.0000
2023-08-14 2023-06-30 13F THE ONCOLOGY INSTITUTE COM 68236X100 1,762,950 -180,593 -9.29 970 -26.42 0.0000
2023-07-14 2023-03-31 13F/A-1 THE ONCOLOGY INSTITUTE COM 68236X100 1,943,543 10,937 0.57 1,318 -58.69 0.0000
2023-05-15 2023-03-31 13F THE ONCOLOGY INSTITUTE COM 68236X100 1,943,543 10,937 1,318 0.0000
2023-02-10 2022-12-31 13F THE ONCOLOGY INSTITUTE COM 68236X100 1,932,606 72,364 3.89 3,189 -62.99 0.0001
2022-11-14 2022-09-30 13F THE ONCOLOGY INSTITUTE COM 68236X100 1,860,242 284,807 18.08 8,613 8.04 0.0003
2022-08-12 2022-06-30 13F THE ONCOLOGY INSTITUTE COM 68236X100 1,575,435 737,114 87.93 7,972 33.38 0.0002
2022-05-13 2022-03-31 13F THE ONCOLOGY INSTITUTE COM 68236X100 838,321 395,977 89.52 5,977 38.58 0.0001
2022-02-14 2021-12-31 13F THE ONCOLOGY INSTITUTE COM 68236X100 442,344 442,344 4,313 0.0001
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.