Listing (Nasdaq Trader)
Symbol Directory: PRTO →Listing ExchangeNYSE Arca (P)
Market Category—
ETFYes
Round Lot Size100 shares
Financial StatusNormal (N)
Test IssueNo
Listing Since2026-09-20 05:30:00 UTC
SEC Ticker EquivalentPRTO
Regulatory Flags (Nasdaq Trader)
Symbol: PRTOSEC Regulation SHO Threshold Security Days
Securities with persistent aggregate fail-to-deliver positions exceeding SEC Rule 203(c)(6) thresholds.
Days on List (Last 90 Trading Days)0 days
Total Historical Threshold Days8 days
First Seen on Threshold List2019-12-12
Most Recent Threshold Date2019-12-23
Rule 201 Short Sale Circuit Breakers Triggered
Alternative uptick rule (Rule 201) triggered by a ≥10% price decline from previous day's close (most recent first, up to 50 triggers).
| Trade Date | Trigger Time (ET) |
|---|---|
| 2019-12-17 | 2019-12-16T09:53:16 |
| 2019-12-16 | 2019-12-16T09:53:16 |
| 2019-11-13 | 2019-11-12T11:05:02 |
| 2019-11-12 | 2019-11-12T11:05:02 |
| 2019-11-01 | 2019-10-31T13:10:06 |
| 2019-10-31 | 2019-10-31T13:10:06 |
| 2019-09-30 | 2019-09-27T12:57:12 |
| 2019-09-27 | 2019-09-27T12:57:12 |
| 2019-09-26 | 2019-09-25T10:00:51 |
| 2019-09-25 | 2019-09-25T10:00:51 |
| 2019-08-08 | 2019-08-07T09:30:00 |
| 2019-08-07 | 2019-08-07T09:30:00 |
| 2019-08-06 | 2019-08-05T10:42:38 |
| 2019-08-05 | 2019-08-05T10:42:38 |
| 2019-07-25 | 2019-07-24T10:15:52 |
| 2019-07-24 | 2019-07-24T10:15:52 |
| 2019-06-21 | 2019-06-20T11:41:25 |
| 2019-06-20 | 2019-06-20T11:41:25 |
| 2019-05-24 | 2019-05-23T09:30:00 |
| 2019-05-23 | 2019-05-23T09:30:00 |
| 2019-05-22 | 2019-05-21T10:02:58 |
| 2019-05-21 | 2019-05-21T10:02:58 |
| 2019-05-09 | 2019-05-08T14:48:01 |
| 2019-05-08 | 2019-05-08T14:48:01 |
| 2019-04-29 | 2019-04-26T11:17:45 |
| 2019-04-26 | 2019-04-26T11:17:45 |
| 2019-04-23 | 2019-04-22T09:30:00 |
| 2019-04-22 | 2019-04-22T09:30:00 |
| 2019-04-05 | 2019-04-04T12:02:24 |
| 2019-04-04 | 2019-04-03T10:14:11 |
| 2019-04-03 | 2019-04-03T10:14:11 |
| 2019-03-29 | 2019-03-28T09:30:00 |
| 2019-03-28 | 2019-03-27T14:09:39 |
| 2019-03-27 | 2019-03-27T14:09:39 |
| 2019-03-18 | 2019-03-15T12:26:57 |
| 2019-03-15 | 2019-03-15T12:26:57 |
| 2019-03-14 | 2019-03-13T11:39:15 |
| 2019-03-13 | 2019-03-13T11:39:15 |
| 2018-10-26 | 2018-10-25T13:08:44 |
| 2018-10-25 | 2018-10-25T13:08:44 |
| 2018-09-24 | 2018-09-21T10:56:33 |
| 2018-09-21 | 2018-09-21T10:56:33 |
| 2018-09-05 | 2018-09-04T10:32:37 |
| 2018-09-04 | 2018-09-04T10:32:37 |
| 2018-07-17 | 2018-07-16T11:11:55 |
| 2018-07-16 | 2018-07-16T11:11:55 |
| 2018-03-16 | 2018-03-15T15:52:33 |
| 2018-03-15 | 2018-03-15T15:52:33 |
| 2018-02-01 | 2018-01-31T15:43:28 |
| 2018-01-31 | 2018-01-31T15:43:28 |
Nasdaq Trader Listing Event History
1 event recorded| Date | Source | Event Kind | Description |
|---|---|---|---|
| 2026-09-20 | nasdaqtraded.txt | FIRST_SEEN | Initial listing on NYSE Arca |
Nasdaq Trader daily captures since 2026-09-20