Ceased on September 16, 2022
Tier 1 Securities 
| Year | Q | Total Trades | Total Shares | Avg Trade Size |
|---|---|---|---|---|
| 2020 | 4 | 628 | 6,461,106 | 10,288 |
| 2020 | 3 | 476 | 3,818,000 | 8,021 |
| 2020 | 2 | 659 | 5,110,600 | 7,755 |
| 2020 | 1 | 1,218 | 8,098,806 | 6,649 |
| 2019 | 4 | 900 | 5,795,400 | 6,439 |
| 2019 | 3 | 813 | 6,097,785 | 7,500 |
| 2019 | 2 | 952 | 6,296,600 | 6,614 |
| 2019 | 1 | 732 | 5,485,391 | 7,494 |
| 2018 | 4 | 1,452 | 10,895,982 | 7,504 |
| 2018 | 3 | 1,533 | 11,923,107 | 7,778 |
| 2018 | 2 | 1,605 | 11,964,170 | 7,454 |
| 2018 | 1 | 1,283 | 11,101,088 | 8,652 |
| 2017 | 4 | 1,237 | 10,398,608 | 8,406 |
| 2017 | 3 | 1,077 | 10,291,153 | 9,555 |
| 2017 | 2 | 1,090 | 9,544,700 | 8,757 |
| 2017 | 1 | 1,016 | 8,851,800 | 8,712 |
| 2016 | 4 | 1,564 | 16,757,800 | 10,715 |
| 2016 | 3 | 1,094 | 14,421,700 | 13,183 |
| 2016 | 2 | 1,260 | 16,045,400 | 12,734 |
| 2016 | 1 | 1,992 | 25,469,615 | 12,786 |
| 2015 | 4 | 1,142 | 13,870,167 | 12,146 |
| 2015 | 3 | 1,345 | 16,295,659 | 12,116 |
| 2015 | 2 | 1,182 | 14,998,495 | 12,689 |
| 2015 | 1 | 1,897 | 22,195,193 | 11,700 |
| 2014 | 4 | 1,775 | 24,772,521 | 13,956 |
| 2014 | 3 | 2,125 | 23,218,456 | 10,926 |
| 2014 | 2 | 1,370 | 18,611,690 | 13,585 |
Tier 2 Securities
| Year | Q | Total Trades | Total Shares | Avg Trade Size |
|---|---|---|---|---|
| 2020 | 4 | 685 | 7,035,300 | 10,271 |
| 2020 | 3 | 665 | 6,305,000 | 9,481 |
| 2020 | 2 | 714 | 5,412,600 | 7,581 |
| 2020 | 1 | 1,134 | 8,134,582 | 7,173 |
| 2019 | 4 | 1,049 | 7,294,362 | 6,954 |
| 2019 | 3 | 829 | 6,538,341 | 7,887 |
| 2019 | 2 | 1,120 | 8,332,820 | 7,440 |
| 2019 | 1 | 1,068 | 7,272,094 | 6,809 |
| 2018 | 4 | 1,512 | 10,985,877 | 7,266 |
| 2018 | 3 | 1,563 | 13,844,170 | 8,857 |
| 2018 | 2 | 1,573 | 14,623,800 | 9,297 |
| 2018 | 1 | 1,525 | 13,588,508 | 8,910 |
| 2017 | 4 | 1,396 | 13,935,320 | 9,982 |
| 2017 | 3 | 1,587 | 14,385,713 | 9,065 |
| 2017 | 2 | 1,668 | 13,167,400 | 7,894 |
| 2017 | 1 | 1,607 | 13,479,000 | 8,388 |
| 2016 | 4 | 1,908 | 16,145,200 | 8,462 |
| 2016 | 3 | 1,699 | 16,426,400 | 9,668 |
| 2016 | 2 | 1,893 | 18,001,800 | 9,510 |
| 2016 | 1 | 2,322 | 22,042,026 | 9,493 |
| 2015 | 4 | 1,895 | 18,963,423 | 10,007 |
| 2015 | 3 | 2,083 | 20,585,694 | 9,883 |
| 2015 | 2 | 1,876 | 18,731,542 | 9,985 |
| 2015 | 1 | 2,479 | 23,316,858 | 9,406 |
| 2014 | 4 | 2,227 | 24,654,016 | 11,071 |
| 2014 | 3 | 2,265 | 23,991,289 | 10,592 |
| 2014 | 2 | 1,293 | 14,801,110 | 11,447 |
NMS Securities
| Year | Q | Total Trades | Total Shares | Avg Trade Size |
|---|---|---|---|---|
| 2020 | 4 | 1,313 | 13,496,406 | 10,279 |
| 2020 | 3 | 1,141 | 10,123,000 | 8,872 |
| 2020 | 2 | 1,373 | 10,523,200 | 7,664 |
| 2020 | 1 | 2,352 | 16,233,388 | 6,902 |
| 2019 | 4 | 1,949 | 13,089,762 | 6,716 |
| 2019 | 3 | 1,642 | 12,636,126 | 7,696 |
| 2019 | 2 | 2,072 | 14,629,420 | 7,061 |
| 2019 | 1 | 1,800 | 12,757,485 | 7,087 |
| 2018 | 4 | 2,964 | 21,881,859 | 7,383 |
| 2018 | 3 | 3,096 | 25,767,277 | 8,323 |
| 2018 | 2 | 3,178 | 26,587,970 | 8,366 |
| 2018 | 1 | 2,808 | 24,689,596 | 8,793 |
| 2017 | 4 | 2,633 | 24,333,928 | 9,242 |
| 2017 | 3 | 2,664 | 24,676,866 | 9,263 |
| 2017 | 2 | 2,758 | 22,712,100 | 8,235 |
| 2017 | 1 | 2,623 | 22,330,800 | 8,513 |
| 2016 | 4 | 3,472 | 32,903,000 | 9,477 |
| 2016 | 3 | 2,793 | 30,848,100 | 11,045 |
| 2016 | 2 | 3,153 | 34,047,200 | 10,798 |
| 2016 | 1 | 4,314 | 47,511,641 | 11,013 |
| 2015 | 4 | 3,037 | 32,833,590 | 10,811 |
| 2015 | 3 | 3,428 | 36,881,353 | 10,759 |
| 2015 | 2 | 3,058 | 33,730,037 | 11,030 |
| 2015 | 1 | 4,376 | 45,512,051 | 10,400 |
| 2014 | 4 | 4,002 | 49,426,537 | 12,350 |
| 2014 | 3 | 4,390 | 47,209,745 | 10,754 |
| 2014 | 2 | 2,663 | 33,412,800 | 12,547 |
Original Source of Information: FINRA ATS Transparency Data Quarterly Statistics
ATS data has been aggregated on a quarterly basis to display total shares, total trades and average trade size per ATS.
Tier 1 comprises all securities in the S&P 500, the Russell 1000 and select Exchange Traded Products (ETPs). Tier 2 comprises all other NMS securities, except for rights and warrants, which are specifically excluded from coverage. The LULD Plan applies during regular trading hours of 9:30 am ET – 4:00 pm ET, excepting opening, reopening, and closing transactions on the primary listing exchanges.
See Limitup-limit-down for a more detailed explanation of these categories.
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