SIMPLEX TRADING, LLC - HARVARD BIOSCIENCE INC ownership

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HARVARD BIOSCIENCE INC's ticker is and the CUSIP is 416906955. A total of 2 filers reported holding HARVARD BIOSCIENCE INC in Q1 2021. The put-call ratio across all filers is - and the average weighting 0.0%.

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Quarter-by-quarter ownership
SIMPLEX TRADING, LLC ownership history of HARVARD BIOSCIENCE INC
ValueSharesWeighting
Q1 2022$4,000
-85.7%
700
-82.9%
0.00%–
Q4 2021$28,000
+55.6%
4,100
+86.4%
0.00%–
Q3 2021$18,0000.0%2,2000.0%0.00%–
Q2 2021$18,000
+260.0%
2,200
+21900.0%
0.00%–
Q1 2021$5,000–10–0.00%–
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Other shareholders
HARVARD BIOSCIENCE INC shareholders Q1 2021
NameSharesValueWeighting ↓
CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0$00.00%
GROUP ONE TRADING, L.P. 1,000$4,3000.00%
View complete list of HARVARD BIOSCIENCE INC shareholders