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 ($40.5k this quarter). Holder counts are more reliable. Shares outstanding: 104.1m as of 2025-08-04, 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 ≈ $3.90. Options: 4 managers hold calls ($134.0k notional), 1 hold puts ($0).
Trends to Q2 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 |
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 2023 | 73 | 57 |
| 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 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2024 | $39.9k | $25.0k | 0.63 |
| Q4 2024 | $133.8k | $17.3k | 0.13 |
| Q1 2025 | $37.7k | $19.7k | 0.52 |
| Q2 2025 | $134.0k | $0 | 0.00 |
Biggest buyers
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | New | +1.1m |
| D. E. Shaw & Co., Inc. | Added | +538.0k |
| RENAISSANCE TECHNOLOGIES LLC | Added | +403.7k |
| MORGAN STANLEY | Added | +229.7k |
| MILLENNIUM MANAGEMENT LLC | Added | +226.3k |
| JANE STREET GROUP, LLC | Added | +223.3k |
| CITADEL ADVISORS LLC | Added | +221.6k |
| UBS Group AG | Added | +168.7k |
| MARSHALL WACE, LLP | New | +156.5k |
| BANK OF AMERICA CORP /DE/ | Added | +147.6k |
Biggest sellers
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | Sold out | -3.1m |
| BlackRock, Inc. | Reduced | -969.1k |
| VANGUARD GROUP INC | Reduced | -903.7k |
| Whetstone Capital Advisors, LLC | Sold out | -869.3k |
| ALGERT GLOBAL LLC | Reduced | -197.3k |
| STATE STREET CORP | Reduced | -190.4k |
| JPMORGAN CHASE & CO | Reduced | -186.7k |
| TEACHER RETIREMENT SYSTEM OF TEXAS | Sold out | -130.3k |
| PINNACLE ASSOCIATES LTD | Reduced | -130.0k |
| Pinnacle Wealth Management Advisory Group, LLC | Reduced | -130.0k |
Biggest calls
| CITADEL ADVISORS LLC | Added | $73.7k18.9k shares |
| GROUP ONE TRADING LLC | Added | $59.3k15.2k shares |
| SIMPLEX TRADING, LLC | Unchanged | $1.0k400 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
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 Q2 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 |
|---|---|---|---|---|---|
| Q3 2023 | 0 | — | 1 | $62.5k | — |
| 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 | — | — |
None reported in Q2 2025.
Holders, Q2 2025
| Manager | Shares | Change |
|---|---|---|
| Advent International, L.P. 7.91% of their portfolio | 62.5m $243.7m | Unchanged |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 8.7m $34.1m | Added +25.5k |
| BlackRock, Inc. 0.00% of their portfolio | 3.1m $12.2m | Reduced -969.1k |
| VANGUARD GROUP INC 0.00% of their portfolio | 2.9m $11.4m | Reduced -903.7k |
| PALISADE CAPITAL MANAGEMENT, LP 0.24% of their portfolio | 2.2m $8.5m | Reduced -82.1k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 2.0m $8.0m | Added +72.4k |
| MORGAN STANLEY 0.00% of their portfolio | 1.6m $6.1m | Added +229.7k |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 1.4m $5.5m | Added +538.0k |
| STATE STREET CORP 0.00% of their portfolio | 1.2m $4.6m | Reduced -190.4k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 1.1m $4.4m | Reduced -111.7k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.00% of their portfolio | 1.1m $4.2m | New |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 769.4k $3.0m | Added +147.6k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 766.4k $3.0m | Added +3.1k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 703.4k $2.7m | Added +403.7k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 665.0k $2.6m | Added +74.9k |
| UBS Group AG 0.00% of their portfolio | 476.3k $1.9m | Added +168.7k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 402.1k $1.6m | Reduced -56.9k |
| Connor, Clark & Lunn Investment Management Ltd. 0.00% of their portfolio | 361.0k $1.4m | Added +110.9k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 345.5k $1.3m | Reduced -116.2k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 333.1k $1.3m | Added +221.6k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 328.4k $1.3m | Added +223.3k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 258.8k $1.0m | Added +226.3k |
| CLARK ESTATES INC/NY 0.21% of their portfolio | 239.6k $934.6k | Unchanged |
| TOCQUEVILLE ASSET MANAGEMENT L.P. 0.01% of their portfolio | 215.0k $838.5k | Reduced -50.0k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 195.5k $762.3k | Reduced -28.4k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 189.9k $740.4k | Reduced -186.7k |
| TWO SIGMA ADVISERS, LP 0.00% of their portfolio | 156.9k $611.9k | Reduced -40.1k |
| MARSHALL WACE, LLP 0.00% of their portfolio | 156.5k $610.3k | New |
| Verition Fund Management LLC 0.00% of their portfolio | 148.7k $580.1k | Added +16.9k |
| Walleye Capital LLC 0.01% of their portfolio | 148.0k $577.0k | Added +114.9k |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 140.5k $548.0k | Reduced -75.5k |
| State of Wyoming 0.06% of their portfolio | 133.6k $521.2k | Added +108.2k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 133.1k $519.1k | Added +44.2k |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 132.4k $516.3k | Reduced -91.6k |
| PINNACLE ASSOCIATES LTD 0.01% of their portfolio | 130.0k $507.0k | Reduced -130.0k |
| Pinnacle Wealth Management Advisory Group, LLC 0.04% of their portfolio | 130.0k $507.0k | Reduced -130.0k |
| CITIGROUP INC 0.00% of their portfolio | 129.9k $506.6k | Added +91.1k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 117.6k $458.8k | Reduced -7.8k |
| PANAGORA ASSET MANAGEMENT INC 0.00% of their portfolio | 113.5k $442.5k | Unchanged |
| Brevan Howard Capital Management LP 0.00% of their portfolio | 112.1k $437.3k | Added +96.9k |
| PNC Financial Services Group, Inc. 0.00% of their portfolio | 91.9k $358.5k | Reduced -556 |
| IEQ CAPITAL, LLC 0.00% of their portfolio | 79.6k $310.5k | Added +60.7k |
| CAXTON ASSOCIATES LLP 0.01% of their portfolio | 79.0k $308.1k | New |
| STIFEL FINANCIAL CORP 0.00% of their portfolio | 77.5k $302.1k | Added +3.1k |
| Engineers Gate Manager LP 0.00% of their portfolio | 74.9k $292.1k | New |
| AXA S.A. 0.00% of their portfolio | 73.9k $288.3k | New |
| Invesco Ltd. 0.00% of their portfolio | 72.9k $284.3k | Added +11.0k |
| ExodusPoint Capital Management, LP 0.00% of their portfolio | 72.2k $282.0k | New |
| XTX Topco Ltd 0.01% of their portfolio | 68.7k $267.8k | Reduced -39.0k |
| Nuveen, LLC 0.00% of their portfolio | 67.6k $263.7k | Reduced -36.1k |
| BARCLAYS PLC 0.00% of their portfolio | 67.0k $261.3k | Added +4.8k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 62.7k $244.5k | Reduced -13.9k |
| Valeo Financial Advisors, LLC 0.01% of their portfolio | 61.4k $239.6k | Added +2.2k |
| BAKER TILLY WEALTH MANAGEMENT, LLC 0.08% of their portfolio | 60.1k $234.3k | Unchanged |
| Brooklyn Investment Group 0.03% of their portfolio | 55.0k $214.5k | Added +54.8k |
| PDT Partners, LLC 0.01% of their portfolio | 52.5k $204.6k | Unchanged |
| Cubist Systematic Strategies, LLC 0.00% of their portfolio | 50.6k $197.2k | Reduced -93.7k |
| Hennion & Walsh Asset Management, Inc. 0.01% of their portfolio | 45.2k $176.1k | Reduced -1.7k |
| Jain Global LLC 0.00% of their portfolio | 41.2k $160.7k | Added +2.6k |
| ALGERT GLOBAL LLC 0.00% of their portfolio | 39.7k $154.9k | Reduced -197.3k |
| DARK FOREST CAPITAL MANAGEMENT LP 0.01% of their portfolio | 36.2k $141.3k | Added +19.9k |
| INTECH INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 33.8k $131.9k | Reduced -21.9k |
| Glenmede Investment Management, LP 0.00% of their portfolio | 30.4k $118.5k | First filing |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 28.7k $112.1k | Unchanged |
| Heron Bay Capital Management 0.02% of their portfolio | 28.7k $111.7k | Added +8.6k |
| Creative Planning 0.00% of their portfolio | 28.6k $111.6k | Added +8.4k |
| MEEDER ASSET MANAGEMENT INC 0.01% of their portfolio | 26.5k $103.2k | Unchanged |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 24.9k $98.0k | Added +3.6k |
| Petrus Trust Company, LTA 0.01% of their portfolio | 24.8k $96.6k | Unchanged |
| MetLife Investment Management, LLC 0.00% of their portfolio | 24.6k $95.9k | Added +19.1k |
| CWM, LLC 0.00% of their portfolio | 24.5k $96.0k | Added +16.7k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 24.4k $95.3k | Reduced -35.4k |
| TWO SIGMA SECURITIES, LLC 0.01% of their portfolio | 23.4k $91.4k | Reduced -21.7k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 22.8k $88.7k | Reduced -8.6k |
| Quadrature Capital Ltd 0.00% of their portfolio | 22.2k $86.6k | Reduced -52.8k |
| Squarepoint Ops LLC 0.00% of their portfolio | 21.7k $84.5k | New |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC 0.00% of their portfolio | 19.2k $77.4k | New |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 18.8k $71.5k | New |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 17.3k $67.3k | Reduced -4.7k |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 17.2k $67.2k | Added +13.5k |
| Cerity Partners LLC 0.00% of their portfolio | 17.1k $66.5k | Reduced -2.4k |
| Point72 Asia (Singapore) Pte. Ltd. 0.01% of their portfolio | 15.7k $61.3k | Added +2.7k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 14.2k $54.0k | Added +10.8k |
| Bayesian Capital Management, LP 0.01% of their portfolio | 14.1k $55.0k | New |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 13.5k $52.8k | Reduced -15.9k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 13.4k $52.3k | Reduced -98.5k |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 13.1k $51.1k | New |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.00% of their portfolio | 12.9k $50.3k | Unchanged |
| Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio | 10.4k $40.5k | Unchanged |
| LPL Financial LLC 0.00% of their portfolio | 10.3k $40.0k | New |
| Farther Finance Advisors, LLC 0.00% of their portfolio | 8.6k $33.4k | New |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 8.3k $32.3k | New |
| SUMMIT SECURITIES GROUP LLC 0.01% of their portfolio | 7.8k $30.6k | Added +7.5k |
| SIMPLEX TRADING, LLC 0.00% of their portfolio | 5.3k $20.0k | Added +3.0k |
| Ameritas Investment Partners, Inc. 0.00% of their portfolio | 4.8k $18.7k | Unchanged |
| FMR LLC 0.00% of their portfolio | 4.7k $18.5k | Reduced -22.4k |
| NISA INVESTMENT ADVISORS, LLC 0.00% of their portfolio | 4.1k $15.9k | Reduced -2.5k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 3.9k $15.1k | Reduced -45.4k |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 3.5k $13.6k | Added +1.0k |
| Legal & General Group Plc 0.00% of their portfolio | 3.3k $12.7k | Reduced -34.2k |