GROUP ONE TRADING, L.P. - AMTECH SYS INC ownership

AMTECH SYS INC's ticker is and the CUSIP is 032332954. A total of 3 filers reported holding AMTECH SYS INC in Q1 2021. The put-call ratio across all filers is - and the average weighting 0.0%.

Quarter-by-quarter ownership
GROUP ONE TRADING, L.P. ownership history of AMTECH SYS INC
ValueSharesWeighting
Q3 2023$3,810
-95.3%
500
-94.1%
0.00%
Q2 2023$81,260
+69.3%
8,500
+102.4%
0.00%
Q3 2021$48,000
+20.0%
4,2000.0%0.00%
Q2 2021$40,000
+17.6%
4,200
+44.8%
0.00%
Q1 2021$34,000
+88.9%
2,900
-27.5%
0.00%
Q4 2018$18,000
+20.0%
4,000
+37.9%
0.00%
Q3 2018$15,000
+25.0%
2,900
+45.0%
0.00%
Q2 2018$12,000
-20.0%
2,0000.0%0.00%
Q1 2018$15,000
+1400.0%
2,000
+1900.0%
0.00%
Q4 2017$1,000
-97.4%
100
-98.4%
0.00%
-100.0%
Q2 2013$39,0006,2000.00%
Other shareholders
AMTECH SYS INC shareholders Q1 2021
NameSharesValueWeighting ↓
CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0$00.00%
GROUP ONE TRADING, L.P. 2,900$34,0000.00%
SIMPLEX TRADING, LLC 18$21,0000.00%
View complete list of AMTECH SYS INC shareholders