DEFINITIVE HEALTHCARE CORP DH
CLASS A COM · Common Stock · CUSIP 24477E103
- SectorTechnology
- IndustryServices-Prepackaged Software
- HeadquartersFramingham, MA
- FilingsSEC EDGAR
* 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 ($46.5k this quarter). Holder counts are more reliable. Shares outstanding: 106.7m as of 2026-08-06, 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 ≈ $0.83. Options: 1 managers hold calls ($1.7k notional), 0 hold puts (—).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 123 |
| Q4 2022 | 138 |
| Q1 2023 | 146 |
| Q2 2023 | 138 |
| Q3 2023 | 135 |
| Q4 2023 | 139 |
| Q1 2024 | 144 |
| Q2 2024 | 145 |
| Q3 2024 | 126 |
| Q4 2024 | 129 |
| Q1 2025 | 137 |
| Q2 2025 | 123 |
| Q3 2025 | 129 |
| Q4 2025 | 123 |
| Q1 2026 | 121 |
| Q2 2026 | 101 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 59 | 78 |
| Q4 2024 | 66 | 55 |
| Q1 2025 | 72 | 63 |
| Q2 2025 | 66 | 72 |
| Q3 2025 | 49 | 74 |
| Q4 2025 | 52 | 79 |
| Q1 2026 | 62 | 60 |
| Q2 2026 | 54 | 71 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $50.3k | $0 | 0.00 |
| Q4 2025 | $40.5k | $0 | 0.00 |
| Q1 2026 | $2.8k | $0 | 0.00 |
| Q2 2026 | $1.7k | $0 | 0.00 |
Biggest buyers
| KENNEDY CAPITAL MANAGEMENT LLC | New | +1.7m |
| Corient Private Wealth LP | New | +454.5k |
| Inspire Investing, LLC | Added | +426.8k |
| TWO SIGMA INVESTMENTS, LP | Added | +275.7k |
| ACADIAN ASSET MANAGEMENT LLC | Added | +245.3k |
| AQR CAPITAL MANAGEMENT LLC | Added | +197.1k |
| GSA CAPITAL PARTNERS LLP | Added | +190.2k |
| SEI INVESTMENTS CO | New | +181.5k |
| JACOBS LEVY EQUITY MANAGEMENT, INC | Added | +173.2k |
| XTX Topco Ltd | Added | +111.9k |
Biggest sellers
| BlackRock, Inc. | Reduced | -1.6m |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | -628.9k |
| STATE STREET CORP | Reduced | -614.5k |
| NORTHERN TRUST CORP | Reduced | -331.6k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -314.5k |
| CITADEL ADVISORS LLC | Reduced | -267.1k |
| CLARK ESTATES INC/NY | Sold out | -239.6k |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Reduced | -232.1k |
| DIMENSIONAL FUND ADVISORS LP | Reduced | -213.2k |
| MORGAN STANLEY | Reduced | -170.2k |
Biggest calls
| GROUP ONE TRADING LLC | Reduced | $1.7k2.0k shares |
Biggest puts
| None |
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.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
ADVENT INTERNATIONAL, L.P.
13D · may seek influence
no change · filed 2026-10-01
Stated purposeItem 4 of the Schedule 13D is hereby amended and supplemented to insert the following at the end thereof: Confidentiality Agreement On September 29, 2026, Advent LP entered into a confidentiality agreement (the "NDA") with the Issuer. The NDA provides that Advent LP generally will not disclose confidential information to any other person, except to its representatives and Mr. Krantz, other third parties with respect to which the Issuer provides prior written approval and potential funding sources with respect to which the Issuer provides written approval, among others, and will not use confidential information except for the purpose of considering, evaluating and negotiating a transaction with the Issuer. The NDA also includes a 12-month non-solicitation provision with respect to the Iss… Full filing |
58.5% |
Krantz Jason Ronald
13D · may seek influence
+0.7 pts · filed 2026-09-02
Stated purposeSince February of 2022, the Reporting Person has filed a Statement of Beneficial Ownership on Schedule 13G and amendments thereto with respect to his beneficial ownership in the Issuer. As a result of the Proposal by the Advent Funds described below, which is premised on the Reporting Person's participation through a roll over arrangement, the Reporting Person is now converting his beneficial ownership filing on Schedule 13G to a filing on this Schedule 13D. On September 1, 2026, Advent International, L.P., on behalf of certain of its managed funds (the "Advent Funds"), submitted a preliminary non-binding indication of interest ("Proposal") to the Special Committee (the "Special Committee") of the Board of Directors of the Issuer related to the proposed acquisition by the Advent Funds of … Full filing |
17.6% |
| GOLDMAN SACHS GROUP INC 13G · institution -2.0 pts · filed 2026-02-09 | 5.7% |
Insider purchases and sales since 1 Apr 2026
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)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 1 | $211.5k | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 0 | — | 0 | — | — |
| Q1 2026 | 0 | — | 0 | — | — |
| Q2 2026 | 0 | — | 0 | — | — |
| Q3 2026 | 0 | — | 0 | — | — |
None reported since 1 Apr 2026.
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| Advent International, L.P. 0.29% of their portfolio | 62.5m $51.9m | Unchanged |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 6.0m $5.0m | Reduced -84.8k |
| D. E. Shaw & Co., Inc. 0.00% of their portfolio | 2.0m $1.6m | Reduced -126.4k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 1.8m $1.5m | Reduced -36.9k |
| KENNEDY CAPITAL MANAGEMENT LLC 0.03% of their portfolio | 1.7m $1.4m | New |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 1.5m $1.2m | Reduced -213.2k |
| BlackRock, Inc. 0.00% of their portfolio | 1.4m $1.2m | Reduced -1.6m |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 899.1k $747.1k | Added +197.1k |
| Inspire Investing, LLC 0.03% of their portfolio | 894.9k $743.6k | Added +426.8k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 550.8k $457.9k | Reduced -628.9k |
| GSA CAPITAL PARTNERS LLP 0.03% of their portfolio | 525.9k $437.0k | Added +190.2k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 525.0k $436.3k | Added +13.9k |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 509.3k $423.2k | Added +275.7k |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.00% of their portfolio | 472.7k $392.8k | Added +173.2k |
| Corient Private Wealth LP 0.00% of their portfolio | 454.5k $377.6k | New |
| ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio | 448.6k $368.0k | Added +245.3k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.00% of their portfolio | 404.1k $335.8k | Reduced -24.8k |
| Squarepoint Ops LLC 0.00% of their portfolio | 351.6k $292.1k | Added +111.6k |
| BARCLAYS PLC 0.00% of their portfolio | 323.7k $268.9k | Reduced -2.8k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 275.9k $229.2k | Reduced -314.5k |
| PINNACLE ASSOCIATES LTD 0.00% of their portfolio | 260.0k $216.1k | Added +37 |
| Pinnacle Wealth Management Advisory Group, LLC 0.01% of their portfolio | 260.0k $216.1k | Added +37 |
| MORGAN STANLEY 0.00% of their portfolio | 254.1k $211.2k | Reduced -170.2k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 250.5k $208.2k | Reduced -10.1k |
| STATE STREET CORP 0.00% of their portfolio | 241.7k $200.8k | Reduced -614.5k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 201.9k $167.8k | Reduced -47.7k |
| SEI INVESTMENTS CO 0.00% of their portfolio | 181.5k $150.8k | New |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 166.3k $138.2k | Reduced -267.1k |
| TOCQUEVILLE ASSET MANAGEMENT L.P. 0.00% of their portfolio | 165.0k $137.1k | Unchanged |
| MARSHALL WACE, LLP 0.00% of their portfolio | 164.0k $136.1k | Added +90.5k |
| XTX Topco Ltd 0.00% of their portfolio | 135.4k $112.5k | Added +111.9k |
| Invesco Ltd. 0.00% of their portfolio | 107.7k $89.5k | Reduced -13.8k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 104.3k $86.7k | Reduced -331.6k |
| IEQ CAPITAL, LLC 0.00% of their portfolio | 101.2k $84.1k | Added +46.2k |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 94.2k $78.3k | Added +50.0k |
| PNC Financial Services Group, Inc. 0.00% of their portfolio | 93.1k $77.3k | Reduced -141 |
| Bank of New York Mellon Corp 0.00% of their portfolio | 81.5k $67.7k | Reduced -113.4k |
| Williams & Novak, LLC 0.04% of their portfolio | 78.6k $65.3k | Added +47.9k |
| CITIGROUP INC 0.00% of their portfolio | 77.3k $64.2k | Added +75.3k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 69.3k $57.6k | Added +28.1k |
| Flywheel Private Wealth LLC 0.03% of their portfolio | 67.7k $56.3k | Unchanged |
| BAKER TILLY WEALTH MANAGEMENT, LLC 0.01% of their portfolio | 60.1k $49.9k | Unchanged |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 54.6k $45.4k | Reduced -232.1k |
| Valeo Financial Advisors, LLC 0.00% of their portfolio | 51.6k $42.9k | Unchanged |
| Jain Global LLC 0.00% of their portfolio | 48.8k $40.5k | New |
| UBS Group AG 0.00% of their portfolio | 48.7k $40.5k | Reduced -28.9k |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 42.2k $35.1k | Added +662 |
| BLAIR WILLIAM & CO/IL 0.00% of their portfolio | 40.2k $33.4k | New |
| Mariner, LLC 0.00% of their portfolio | 39.9k $33.2k | Added +24.7k |
| Balyasny Asset Management L.P. 0.00% of their portfolio | 38.5k $32.0k | New |
| FMR LLC 0.00% of their portfolio | 37.7k $31.3k | Added +12.2k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 31.3k $26.0k | Reduced -100 |
| EP Wealth Advisors, LLC 0.00% of their portfolio | 30.2k $25.1k | Added +5.0k |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC 0.00% of their portfolio | 29.3k $24.4k | Added +15.2k |
| MERCER GLOBAL ADVISORS INC /ADV 0.00% of their portfolio | 26.9k $22.3k | Added +15.5k |
| STIFEL FINANCIAL CORP 0.00% of their portfolio | 26.3k $21.9k | Reduced -137.8k |
| Engineers Gate Manager LP 0.00% of their portfolio | 24.6k $20.5k | Reduced -12.3k |
| Cerity Partners LLC 0.00% of their portfolio | 19.4k $16.1k | New |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 17.7k $14.7k | Reduced -27.8k |
| OCCUDO QUANTITATIVE STRATEGIES LP 0.00% of their portfolio | 16.5k $13.7k | Reduced -7.2k |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 16.3k $13.5k | Reduced -76.7k |
| CAPTRUST FINANCIAL ADVISORS 0.00% of their portfolio | 15.8k $13.1k | New |
| OVERSEA-CHINESE BANKING Corp Ltd 0.00% of their portfolio | 15.5k $12.8k | New |
| Abel Hall, LLC 0.00% of their portfolio | 15.2k $12.6k | Added +544 |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO 0.00% of their portfolio | 15.0k $12.5k | Unchanged |
| Schonfeld Strategic Advisors LLC 0.00% of their portfolio | 14.9k $12.4k | New |
| Connor, Clark & Lunn Investment Management Ltd. 0.00% of their portfolio | 14.1k $11.7k | Reduced -23.0k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 14.1k $11.7k | Reduced -37.9k |
| Arax Advisory Partners 0.00% of their portfolio | 13.9k $11.6k | Added +13.9k |
| JMN Financial LLC 0.01% of their portfolio | 13.0k $10.8k | New |
| Creative Planning 0.00% of their portfolio | 12.8k $10.6k | New |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 12.7k $9.1k | Added +240 |
| Ariadne Wealth Management, LP 0.00% of their portfolio | 12.6k $10.5k | New |
| Vanguard Personalized Indexing Management, LLC 0.00% of their portfolio | 11.9k $9.9k | Reduced -7.6k |
| MEEDER ASSET MANAGEMENT INC 0.00% of their portfolio | 11.7k $9.7k | Added +4.7k |
| State of Alaska, Department of Revenue 0.00% of their portfolio | 11.4k $8.0k | Unchanged |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 5.8k $4.9k | Reduced -6.9k |
| Integrated Wealth Concepts LLC 0.00% of their portfolio | 5.4k $4.5k | New |
| Rockefeller Capital Management L.P. 0.00% of their portfolio | 2.4k $2.0k | Reduced -6.3k |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 2.4k $2.0k | Unchanged |
| EverSource Wealth Advisors, LLC 0.00% of their portfolio | 2.0k $1.7k | Added +824 |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 784 $1.0k | Added +430 |
| Essential Partners LLC 0.00% of their portfolio | 735 $611 | Added +54 |
| SBI Securities Co., Ltd. 0.00% of their portfolio | 696 $578 | Added +193 |
| NISA INVESTMENT ADVISORS, LLC 0.00% of their portfolio | 584 $485 | Added +287 |
| ROTHSCHILD INVESTMENT LLC 0.00% of their portfolio | 567 $471 | Added +459 |
| Farther Finance Advisors, LLC 0.00% of their portfolio | 492 $398 | Added +200 |
| Optiver Holding B.V. 0.00% of their portfolio | 316 $263 | Unchanged |
| FIFTH THIRD BANCORP 0.00% of their portfolio | 269 $223 | Reduced -45 |
| GAMMA Investing LLC 0.00% of their portfolio | 259 $215 | Reduced -62 |
| True Wealth Design, LLC 0.00% of their portfolio | 246 $205 | Reduced -93 |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 231 $192 | Reduced -6.3k |
| IFP Advisors, Inc 0.00% of their portfolio | 175 $145 | Added +45 |
| Fortitude Family Office, LLC 0.00% of their portfolio | 69 $57 | New |
| Basecamp Wealth Advisors LLC 0.00% of their portfolio | 54 $45 | Added +52 |
| SJS Investment Consulting Inc. 0.00% of their portfolio | 43 $36 | Added +40 |
| Wealth Enhancement Trust Services, Inc. 0.00% of their portfolio | 23 $19 | New |
| JPL Wealth Management, LLC 0.00% of their portfolio | 9 $8 | New |
| HUNTINGTON NATIONAL BANK 0.00% of their portfolio | 1 $1 | Unchanged |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 1 $0 | Reduced -11.3k |