Definitive Healthcare Corp.
US ˙ NasdaqGS ˙ US24477E1038

SecurityDH / Definitive Healthcare Corp.
InstitutionXTX Topco Ltd
Latest Disclosed Ownership23,507 shares
Latest Disclosed Value $ 28,914
XTX Topco Ltd reports 68.78% decrease in ownership of DH / Definitive Healthcare Corp.

On May 15, 2026 - XTX Topco Ltd filed a 13F-HR form disclosing ownership of 23,507 shares of Definitive Healthcare Corp. (US:DH) valued at $28,914 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 75,306 shares of Definitive Healthcare Corp.. This represents a change in shares of -68.78% during the quarter. The current value of the position is $21,293 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)
2026-05-15 2026-03-31 13F DEFINITIVE HEALTHCARE CLASS A COM 24477E103 23,507 -51,799 -68.78 29 -87.04 0.0005
2026-02-17 2025-12-31 13F DEFINITIVE HEALTHCARE CLASS A COM 24477E103 75,306 27,495 57.51 216 11.34 0.0057
2025-11-14 2025-09-30 13F DEFINITIVE HEALTHCARE CLASS A COM 24477E103 47,811 -20,868 -30.38 194 -27.34 0.0101
2025-08-12 2025-06-30 13F DEFINITIVE HEALTHCARE CLASS A COM 24477E103 68,679 -38,982 -36.21 268 -14.15 0.0111
2025-05-08 2025-03-31 13F DEFINITIVE HEALTHCARE CLASS A COM 24477E103 107,661 -10,845 -9.15 311 -36.14 0.0159
2025-02-13 2024-12-31 13F DEFINITIVE HEALTHCARE CLASS A COM 24477E103 118,506 97,617 467.31 487 423.66 0.0400
2024-11-14 2024-09-30 13F DEFINITIVE HEALTHCARE CLASS A COM 24477E103 20,889 20,889 93 0.0068
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.