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US ˙ NasdaqGM ˙ US87583X1090

SecurityTNGX / Tango Therapeutics, Inc.
InstitutionCitigroup Inc
Latest Disclosed Ownership19,633 shares
Latest Disclosed Value $ 410,723
Citigroup Inc reports 45.82% decrease in ownership of TNGX / Tango Therapeutics, Inc.

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 19,633 shares of Tango Therapeutics, Inc. (US:TNGX) valued at $410,722 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 36,236 shares of Tango Therapeutics, Inc.. This represents a change in shares of -45.82% during the quarter. The current value of the position is $396,979 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)
2026-05-11 2026-03-31 13F TANGO THERAPEUTICS COM 87583X109 19,633 -16,603 -45.82 411 27.73 0.0001
2026-02-13 2025-12-31 13F TANGO THERAPEUTICS COM 87583X109 36,236 18,134 100.18 321 111.18 0.0001
2025-11-10 2025-09-30 13F TANGO THERAPEUTICS COM 87583X109 18,102 -12,189 -40.24 152 -1.94 0.0001
2025-08-11 2025-06-30 13F TANGO THERAPEUTICS COM 87583X109 30,291 -11,532 -27.57 155 171.93 0.0001
2025-05-12 2025-03-31 13F TANGO THERAPEUTICS COM 87583X109 41,823 -5,169 -11.00 57 -60.69 0.0000
2025-02-12 2024-12-31 13F TANGO THERAPEUTICS COM 87583X109 46,992 8,316 21.50 145 -51.18 0.0001
2024-11-12 2024-09-30 13F TANGO THERAPEUTICS COM 87583X109 38,676 16,611 75.28 298 57.14 0.0002
2024-08-12 2024-06-30 13F TANGO THERAPEUTICS COM 87583X109 22,065 -169,368 -88.47 189 -87.56 0.0001
2024-05-10 2024-03-31 13F TANGO THERAPEUTICS COM 87583X109 191,433 183,270 2,245.13 1,520 1,798.75 0.0010
2024-02-09 2023-12-31 13F TANGO THERAPEUTICS COM 87583X109 8,163 6,945 570.20 81 515.38 0.0001
2023-12-06 2023-09-30 13F/A-1 TANGO THERAPEUTICS COM 87583X109 1,218 -14,910 -92.45 14 -75.47 0.0000
2023-11-09 2023-09-30 13F TANGO THERAPEUTICS COM 87583X109 1,218 -14,910 14 0.0000
2023-08-10 2023-06-30 13F TANGO THERAPEUTICS COM 87583X109 16,128 7,937 96.90 54 65.63 0.0000
2023-05-11 2023-03-31 13F TANGO THERAPEUTICS COM 87583X109 8,191 -2,152 -20.81 32 -56.76 0.0000
2023-02-09 2022-12-31 13F TANGO THERAPEUTICS COM 87583X109 10,343 -1,449 -12.29 75 72.09 0.0001
2022-11-10 2022-09-30 13F TANGO THERAPEUTICS COM 87583X109 11,792 -1,752 -12.94 43 -29.51 0.0000
2022-08-10 2022-06-30 13F TANGO THERAPEUTICS COM 87583X109 13,544 -23,165 -63.10 61 -78.06 0.0000
2022-05-12 2022-03-31 13F TANGO THERAPEUTICS COM 87583X109 36,709 4,267 13.15 278 -21.69 0.0002
2022-02-10 2021-12-31 13F TANGO THERAPEUTICS COM 87583X109 32,442 29,273 923.73 355 765.85 0.0002
2021-11-10 2021-09-30 13F TANGO THERAPEUTICS COM 87583X109 3,169 3,169 41 0.0000
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.