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 ($45.3k this quarter). Holder counts are more reliable. Shares outstanding: 103.3m as of 2025-11-03, 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 ≈ $4.06. Options: 2 managers hold calls ($50.3k notional), 0 hold puts (—).
Trends to Q3 2025
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 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2023 | 69 | 61 |
| Q1 2024 | 83 | 60 |
| Q2 2024 | 90 | 72 |
| Q3 2024 | 59 | 78 |
| Q4 2024 | 66 | 55 |
| Q1 2025 | 72 | 63 |
| Q2 2025 | 66 | 72 |
| Q3 2025 | 49 | 74 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q4 2024 | $133.8k | $17.3k | 0.13 |
| Q1 2025 | $37.7k | $19.7k | 0.52 |
| Q2 2025 | $134.0k | $0 | 0.00 |
| Q3 2025 | $50.3k | $0 | 0.00 |
Biggest buyers
| Corient Private Wealth LP | New | +450.0k |
| D. E. Shaw & Co., Inc. | Added | +394.9k |
| CITIGROUP INC | Added | +159.2k |
| NORTHERN TRUST CORP | Added | +145.4k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Added | +127.1k |
| Inspire Investing, LLC | New | +115.4k |
| Hillsdale Investment Management Inc. | New | +75.3k |
| Russell Investments Group, Ltd. | New | +38.2k |
| Invesco Ltd. | Added | +38.1k |
| Round Rock Advisors LLC | New | +36.2k |
Biggest sellers
| GOLDMAN SACHS GROUP INC | Reduced | -1.4m |
| BANK OF AMERICA CORP /DE/ | Reduced | -358.5k |
| CITADEL ADVISORS LLC | Sold out | -333.1k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -158.4k |
| VANGUARD GROUP INC | Reduced | -153.8k |
| MORGAN STANLEY | Reduced | -152.4k |
| Walleye Capital LLC | Sold out | -148.0k |
| MARSHALL WACE, LLP | Reduced | -136.4k |
| Connor, Clark & Lunn Investment Management Ltd. | Reduced | -105.8k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | -102.3k |
Biggest calls
| CITADEL ADVISORS LLC | Reduced | $49.9k12.3k shares |
| GROUP ONE TRADING LLC | Reduced | $406100 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 in Q3 2025
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 2023 | 0 | — | 0 | — | — |
| Q1 2024 | 0 | — | 0 | — | — |
| Q2 2024 | 0 | — | 0 | — | — |
| Q3 2024 | 0 | — | 0 | — | — |
| Q4 2024 | 0 | — | 1 | $211.5k | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 0 | — | — |
None reported in Q3 2025.
Holders, Q3 2025
| Manager | Shares | Change |
|---|---|---|
| Advent International, L.P. 5.11% of their portfolio | 62.5m $253.7m | Unchanged |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 7.3m $29.7m | Reduced -1.4m |
| BlackRock, Inc. 0.00% of their portfolio | 3.1m $12.7m | Added +7.8k |
| VANGUARD GROUP INC 0.00% of their portfolio | 2.8m $11.2m | Reduced -153.8k |
| PALISADE CAPITAL MANAGEMENT, LP 0.24% of their portfolio | 2.1m $8.7m | Reduced -40.4k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 2.1m $8.4m | Added +33.6k |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 1.8m $7.3m | Added +394.9k |
| MORGAN STANLEY 0.00% of their portfolio | 1.4m $5.7m | Reduced -152.4k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.00% of their portfolio | 1.2m $4.9m | Added +127.1k |
| STATE STREET CORP 0.00% of their portfolio | 1.2m $4.8m | Reduced -15.9k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 1.1m $4.3m | Reduced -72.2k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 766.4k $3.1m | Unchanged |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 670.2k $2.7m | Reduced -33.2k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 593.4k $2.4m | Reduced -71.7k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 490.9k $2.0m | Added +145.4k |
| Corient Private Wealth LP 0.00% of their portfolio | 450.0k $1.8m | New |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 410.9k $1.7m | Reduced -358.5k |
| UBS Group AG 0.00% of their portfolio | 376.9k $1.5m | Reduced -99.4k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 374.5k $1.5m | Reduced -27.6k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 323.8k $1.3m | Reduced -4.6k |
| CITIGROUP INC 0.00% of their portfolio | 289.1k $1.2m | Added +159.2k |
| Connor, Clark & Lunn Investment Management Ltd. 0.00% of their portfolio | 255.2k $1.0m | Reduced -105.8k |
| CLARK ESTATES INC/NY 0.22% of their portfolio | 239.6k $972.9k | Unchanged |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 224.5k $911.3k | Added +34.6k |
| TOCQUEVILLE ASSET MANAGEMENT L.P. 0.01% of their portfolio | 215.0k $872.9k | Unchanged |
| Bank of New York Mellon Corp 0.00% of their portfolio | 200.5k $814.1k | Added +5.0k |
| Verition Fund Management LLC 0.00% of their portfolio | 148.7k $603.9k | Unchanged |
| PINNACLE ASSOCIATES LTD 0.01% of their portfolio | 130.0k $527.8k | Unchanged |
| Pinnacle Wealth Management Advisory Group, LLC 0.04% of their portfolio | 130.0k $527.8k | Unchanged |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 123.4k $501.0k | Reduced -9.7k |
| Inspire Investing, LLC 0.05% of their portfolio | 115.4k $468.5k | New |
| PANAGORA ASSET MANAGEMENT INC 0.00% of their portfolio | 113.3k $460.1k | Reduced -132 |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 112.0k $454.6k | Reduced -28.5k |
| Invesco Ltd. 0.00% of their portfolio | 111.0k $450.8k | Added +38.1k |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 108.2k $439.5k | Reduced -24.1k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 100.3k $407.4k | Reduced -158.4k |
| TWO SIGMA ADVISERS, LP 0.00% of their portfolio | 99.5k $404.0k | Reduced -57.4k |
| State of Wyoming 0.04% of their portfolio | 92.6k $375.8k | Reduced -41.1k |
| IEQ CAPITAL, LLC 0.00% of their portfolio | 92.3k $374.6k | Added +12.7k |
| STIFEL FINANCIAL CORP 0.00% of their portfolio | 87.2k $353.9k | Added +9.7k |
| PNC Financial Services Group, Inc. 0.00% of their portfolio | 81.9k $332.6k | Reduced -10.0k |
| Hillsdale Investment Management Inc. 0.01% of their portfolio | 75.3k $305.7k | New |
| Nuveen, LLC 0.00% of their portfolio | 67.6k $274.5k | Unchanged |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 60.1k $244.1k | Reduced -2.6k |
| BAKER TILLY WEALTH MANAGEMENT, LLC 0.06% of their portfolio | 60.1k $243.9k | Unchanged |
| Valeo Financial Advisors, LLC 0.01% of their portfolio | 59.9k $243.3k | Reduced -1.5k |
| CAXTON ASSOCIATES LLP 0.01% of their portfolio | 57.2k $232.4k | Reduced -21.8k |
| BARCLAYS PLC 0.00% of their portfolio | 50.4k $204.7k | Reduced -16.6k |
| Brevan Howard Capital Management LP 0.00% of their portfolio | 50.2k $203.6k | Reduced -62.0k |
| Brooklyn Investment Group 0.03% of their portfolio | 49.1k $187.2k | Reduced -5.9k |
| XTX Topco Ltd 0.01% of their portfolio | 47.8k $194.1k | Reduced -20.9k |
| Hennion & Walsh Asset Management, Inc. 0.01% of their portfolio | 44.8k $181.8k | Reduced -367 |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 38.2k $155.1k | New |
| Round Rock Advisors LLC 0.02% of their portfolio | 36.2k $147.0k | New |
| Cambria Investment Management, L.P. 0.01% of their portfolio | 35.8k $145.4k | New |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 35.6k $144.4k | Added +6.8k |
| AXA Investment Managers S.A. 0.00% of their portfolio | 34.9k $141.8k | First filing |
| Creative Planning 0.00% of their portfolio | 33.7k $136.7k | Added +5.0k |
| Glenmede Investment Management, LP 0.00% of their portfolio | 31.0k $125.9k | Added +635 |
| PharVision Advisers, LLC 0.07% of their portfolio | 29.6k $120.0k | New |
| Engineers Gate Manager LP 0.00% of their portfolio | 27.9k $113.4k | Reduced -47.0k |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 27.9k $113.2k | New |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 27.2k $110.4k | Added +4.4k |
| MARTINGALE ASSET MANAGEMENT L P 0.00% of their portfolio | 27.1k $110.1k | New |
| Heron Bay Capital Management 0.02% of their portfolio | 27.0k $109.5k | Reduced -1.7k |
| MEEDER ASSET MANAGEMENT INC 0.01% of their portfolio | 26.5k $107.4k | Unchanged |
| ALGERT GLOBAL LLC 0.00% of their portfolio | 24.7k $100.4k | Reduced -15.0k |
| CWM, LLC 0.00% of their portfolio | 24.0k $97.0k | Reduced -488 |
| MetLife Investment Management, LLC 0.00% of their portfolio | 22.6k $91.9k | Reduced -2.0k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 22.1k $89.9k | Reduced -2.3k |
| Arax Advisory Partners 0.00% of their portfolio | 22.1k $89.7k | New |
| Graham Capital Management, L.P. 0.00% of their portfolio | 21.8k $88.5k | New |
| Cerity Partners LLC 0.00% of their portfolio | 21.1k $85.7k | Added +4.0k |
| INTECH INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 21.0k $85.2k | Reduced -12.8k |
| Strengthening Families & Communities, LLC 0.02% of their portfolio | 20.5k $83.3k | New |
| MARSHALL WACE, LLP 0.00% of their portfolio | 20.1k $81.5k | Reduced -136.4k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 19.0k $77.0k | Reduced -6.0k |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 18.8k $76.1k | Unchanged |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC 0.00% of their portfolio | 18.7k $59.6k | Reduced -517 |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 17.8k $72.3k | Added +4.4k |
| PRELUDE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 15.7k $63.7k | New |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 15.4k $62.4k | Reduced -102.3k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 15.3k $61.9k | Reduced -2.0k |
| Ariadne Wealth Management, LP 0.02% of their portfolio | 13.4k $36.3k | New |
| Balyasny Asset Management L.P. 0.00% of their portfolio | 12.6k $51.1k | New |
| TWO SIGMA SECURITIES, LLC 0.01% of their portfolio | 10.9k $44.1k | Reduced -12.6k |
| LPL Financial LLC 0.00% of their portfolio | 10.8k $43.8k | Added +529 |
| PDT Partners, LLC 0.00% of their portfolio | 10.5k $42.7k | Reduced -41.9k |
| Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio | 10.4k $42.2k | Unchanged |
| Point72 Asia (Singapore) Pte. Ltd. 0.00% of their portfolio | 7.8k $31.7k | Reduced -7.9k |
| FMR LLC 0.00% of their portfolio | 5.7k $23.2k | Added +986 |
| Quarry LP 0.01% of their portfolio | 5.6k $22.7k | New |
| State of Alaska, Department of Revenue 0.00% of their portfolio | 5.5k $22.0k | New |
| NISA INVESTMENT ADVISORS, LLC 0.00% of their portfolio | 5.1k $20.6k | Added +1.0k |
| Ameritas Investment Partners, Inc. 0.00% of their portfolio | 4.8k $19.5k | Unchanged |
| Cubist Systematic Strategies, LLC 0.00% of their portfolio | 4.6k $18.6k | Reduced -46.0k |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 3.4k $13.8k | Reduced -13.8k |
| Legal & General Group Plc 0.00% of their portfolio | 3.3k $13.2k | Unchanged |
| SIMPLEX TRADING, LLC 0.00% of their portfolio | 2.9k $11.0k | Reduced -2.4k |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 2.9k $11.7k | Reduced -590 |