PSYCHEMEDICS CORP - PMDI

Detailed investor-level table based on 13F positions.
Early Q4 2025 data: only 1 institutional holders reported so far. The full shareholder list will grow as more funds file with the SEC.

Shareholders (13F)

Quarter: Q3 2024 · Compare: Q2 2024
13D/13G major owners: Ownership tab.
Methodology: Market value and % of portfolio use SEC reported VALUE ($000). For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received. Details.
Rows: 0
Investor History Status Shares held Market value ($000) % of portfolio Previous % Rank Change in shares % change in shares Source Date reported
RENAISSANCE TECHNOLOGIES LLC History Added to 270,863 625 0.0% 0.0% 1 +13,900 5.41% Q3 2024 Nov 13, 2024
VANGUARD GROUP INC History No change 251,283 580 0.0% 0.0% 2 0 0.0% Q3 2024 Nov 13, 2024
BlackRock, Inc. History New 66,408 153 0.0% 3 +66,408 New Q3 2024 Nov 13, 2024
SUSQUEHANNA INTERNATIONAL GROUP, LLP History Added to 47,391 109 0.0% 0.0% 4 +35,854 310.77% Q3 2024 Nov 14, 2024
GEODE CAPITAL MANAGEMENT, LLC History Added to 42,679 98 0.0% 0.0% 5 +5,474 14.71% Q3 2024 Nov 12, 2024
CITADEL ADVISORS LLC History Added to 21,509 49 0.0% 0.0% 6 +8,869 70.17% Q3 2024 Nov 14, 2024
DIMENSIONAL FUND ADVISORS LP History Reduced 21,060 48 0.0% 0.0% 7 -1,628 -7.18% Q3 2024 Nov 07, 2024
NORTHERN TRUST CORP History Added to 18,910 43 0.0% 0.0% 8 +3,674 24.11% Q3 2024 Nov 13, 2024
MORGAN STANLEY History No change 3,001 6 0.0% 0.0% 9 0 0.0% Q3 2024 May 14, 2025
Tower Research Capital LLC (TRC) History Reduced 1,977 4 0.0% 0.0% 10 -1,590 -44.58% Q3 2024 Nov 14, 2024
Provenance Wealth Advisors, LLC History No change 772 1 0.0% 0.0% 11 0 0.0% Q3 2024 Aug 15, 2025
CRAWFORD INVESTMENT COUNSEL INC History Closed out 0 0 0.0% -10,018 -100.0% Q2 2024 Aug 14, 2024
FMR LLC History Reduced 100 0 0.0% -640 -86.49% Q3 2024 Nov 13, 2024
ROYAL BANK OF CANADA History Closed out 0 0 -50 -100.0% Q2 2024 Nov 06, 2024
NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO History Closed out 0 0 -15 -100.0% Q2 2024 Aug 16, 2024
BANK OF AMERICA CORP /DE/ History Added to 51 0 +12 30.77% Q3 2024 Mar 18, 2025
JPMORGAN CHASE & CO History Reduced 11 0 -1 -8.33% Q3 2024 Dec 26, 2024
WELLS FARGO & COMPANY/MN History No change 1 0 0 0.0% Q3 2024 Nov 13, 2024
OSAIC HOLDINGS, INC. History No change 257 0 0 0.0% Q3 2024 Nov 13, 2024