WELLINGTON MANAGEMENT GROUP LLP - PSYCHEMEDICS CORP ownership

PSYCHEMEDICS CORP's ticker is PMD and the CUSIP is 744375205. A total of 55 filers reported holding PSYCHEMEDICS CORP in Q4 2018. The put-call ratio across all filers is - and the average weighting 0.1%.

Quarter-by-quarter ownership
WELLINGTON MANAGEMENT GROUP LLP ownership history of PSYCHEMEDICS CORP
ValueSharesWeighting
Q1 2019$3,927,000
+16.0%
279,896
+31.2%
0.00%0.0%
Q4 2018$3,386,000
-10.6%
213,339
+6.0%
0.00%0.0%
Q3 2018$3,786,000201,2920.00%
Other shareholders
PSYCHEMEDICS CORP shareholders Q4 2018
NameSharesValueWeighting ↓
Tieton Capital Management, LLC 370,231$6,142,0004.61%
KELLEHER FINANCIAL ADVISORS 136,338$2,261,0001.25%
NAPLES GLOBAL ADVISORS, LLC 67,972$1,128,0000.54%
PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. 193,500$3,210,0000.40%
North Star Investment Management Corp. 112,700$1,870,0000.35%
RBF Capital, LLC 78,495$1,302,0000.26%
CARL DOMINO INC 20,086$333,0000.25%
Granite Investment Partners, LLC 88,246$1,464,0000.13%
Moors & Cabot, Inc. 34,474$573,0000.10%
KENNEDY CAPITAL MANAGEMENT LLC 292,947$4,860,0000.08%
View complete list of PSYCHEMEDICS CORP shareholders