BRIDGEWAY CAPITAL MANAGEMENT, LLC - PSYCHEMEDICS CORP ownership

PSYCHEMEDICS CORP's ticker is PMD and the CUSIP is 744375205. A total of 53 filers reported holding PSYCHEMEDICS CORP in Q4 2016. The put-call ratio across all filers is - and the average weighting 0.2%.

Quarter-by-quarter ownership
BRIDGEWAY CAPITAL MANAGEMENT, LLC ownership history of PSYCHEMEDICS CORP
ValueSharesWeighting
Q4 2016$247,00010,0000.00%
Other shareholders
PSYCHEMEDICS CORP shareholders Q4 2016
NameSharesValueWeighting ↓
22NW, LP 274,418$1,089,4390.78%
WEALTH EFFECTS LLC 40,701$161,5820.08%
Cannell Capital 74,794$296,9320.07%
SANTA MONICA PARTNERS LP 20,000$790.06%
RBF Capital, LLC 144,231$572,5970.04%
WEDBUSH SECURITIES INC 42,414$1680.01%
Ancora Advisors LLC 78,373$311,1410.01%
Your Advocates Ltd., LLP 1,400$5,5580.00%
CRAWFORD INVESTMENT COUNSEL INC 32,098$127,4280.00%
Renaissance Technologies 273,663$1,0860.00%
View complete list of PSYCHEMEDICS CORP shareholders