Blair William & Co

SEC CIK: 0000902367
Latest filing: Aug 11, 2026

SEC filings (opens in a new tab)

PMD holding history

Psychemedics Corp in every 13F filed by Blair William & Co, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

PMD overview All 13F holders of PMD Full Q2 2026 holdings

Shares (Q4 2021): 0; Sold out in Q4 2021
Value: $0
% of portfolio: 0.0%
Quarters held: 3; Since Q1 2021

Holdings of PMD by Blair William & Co, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q4 2021	0	$0	0.0%	−13,500−100.0%	Sold out	Holders
Q3 2021	13,500	$113.0K	<0.1%	−500−3.6%	Reduced	Holders
Q2 2021	14,000	$97.0K	<0.1%	−1,500−9.7%	Reduced	Holders
Q1 2021	15,500	$96.0K	<0.1%	–	–	Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.