Definitive Healthcare Corp.
US ˙ NasdaqGS ˙ US24477E1038

SecurityDH / Definitive Healthcare Corp.
InstitutionCitigroup Inc
Latest Disclosed Ownership1,919 shares
Latest Disclosed Value $ 2,360
Citigroup Inc reports 97.23% decrease in ownership of DH / Definitive Healthcare Corp.

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 1,919 shares of Definitive Healthcare Corp. (US:DH) valued at $2,360 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 69,223 shares of Definitive Healthcare Corp.. This represents a change in shares of -97.23% during the quarter. The current value of the position is $1,684 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 DEFINITIVE HEALTHCARE CLASS A COM 24477E103 1,919 -67,304 -97.23 2 -98.99 0.0000
2026-02-13 2025-12-31 13F DEFINITIVE HEALTHCARE CLASS A COM 24477E103 69,223 -219,864 -76.05 199 -83.12 0.0001
2025-11-10 2025-09-30 13F DEFINITIVE HEALTHCARE CLASS A COM 24477E103 289,087 159,179 122.53 1,174 131.82 0.0005
2025-08-11 2025-06-30 13F DEFINITIVE HEALTHCARE CLASS A COM 24477E103 129,908 91,102 234.76 507 351.79 0.0002
2025-05-12 2025-03-31 13F DEFINITIVE HEALTHCARE CLASS A COM 24477E103 38,806 -4,954 -11.32 112 -37.43 0.0001
2025-02-12 2024-12-31 13F DEFINITIVE HEALTHCARE CLASS A COM 24477E103 43,760 4,923 12.68 180 3.47 0.0001
2024-11-12 2024-09-30 13F DEFINITIVE HEALTHCARE CLASS A COM 24477E103 38,837 26,868 224.48 174 166.15 0.0001
2024-08-12 2024-06-30 13F DEFINITIVE HEALTHCARE CLASS A COM 24477E103 11,969 3,390 39.52 65 -5.80 0.0000
2024-05-10 2024-03-31 13F DEFINITIVE HEALTHCARE CLASS A COM 24477E103 8,579 1,975 29.91 69 6.15 0.0000
2024-02-09 2023-12-31 13F DEFINITIVE HEALTHCARE CLASS A COM 24477E103 6,604 -5,492 -45.40 66 -32.29 0.0000
2023-12-06 2023-09-30 13F/A-1 DEFINITIVE HEALTHCARE CLASS A COM 24477E103 12,096 -32,557 -72.91 97 -80.45 0.0001
2023-11-09 2023-09-30 13F DEFINITIVE HEALTHCARE CLASS A COM 24477E103 12,096 -32,557 97 0.0000
2023-08-10 2023-06-30 13F DEFINITIVE HEALTHCARE CLASS A COM 24477E103 44,653 31,792 247.20 491 271.97 0.0003
2023-05-11 2023-03-31 13F DEFINITIVE HEALTHCARE CLASS A COM 24477E103 12,861 -2 -0.02 133 -6.38 0.0001
2023-02-09 2022-12-31 13F DEFINITIVE HEALTHCARE CLASS A COM 24477E103 12,863 -3,216 -20.00 141 -43.60 0.0001
2022-11-10 2022-09-30 13F DEFINITIVE HEALTHCARE CLASS A COM 24477E103 16,079 -1,252 -7.22 250 -37.03 0.0002
2022-08-10 2022-06-30 13F DEFINITIVE HEALTHCARE CLASS A COM 24477E103 17,331 14,337 478.86 397 436.49 0.0003
2022-05-12 2022-03-31 13F DEFINITIVE HEALTHCARE CLASS A COM 24477E103 2,994 -43,158 -93.51 74 -94.13 0.0000
2022-02-10 2021-12-31 13F DEFINITIVE HEALTHCARE CLASS A COM 24477E103 46,152 46,152 1,261 0.0007
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.