News + Filings Holdings
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RENAISSANCE TECHNOLOGIES LLC
> PMD
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | PSYCHEMEDICS CORP | PMD | 277,963 | -3,300 | 1,268,000 | -209,000 | $4.56 |
| 03/31/2023 | PSYCHEMEDICS CORP | PMD | 281,263 | -24,900 | 1,477,000 | -498,000 | $5.25 |
| 09/30/2022 | PSYCHEMEDICS CORP | PMD | 306,163 | -20,004 | 1,975,000 | -93,000 | $6.45 |
| 06/30/2022 | PSYCHEMEDICS CORP | PMD | 326,167 | -15,255 | 2,068,000 | -288,000 | $6.34 |
| 03/31/2022 | PSYCHEMEDICS CORP | PMD | 341,422 | -30,724 | 2,356,000 | -256,000 | $6.90 |
| 12/31/2021 | PSYCHEMEDICS CORP | PMD | 372,146 | -1,294 | 2,612,000 | -525,000 | $7.02 |
| 09/30/2021 | PSYCHEMEDICS CORP | PMD | 373,440 | -10,900 | 3,137,000 | 462,000 | $8.40 |
| 06/30/2021 | PSYCHEMEDICS CORP | PMD | 384,340 | -29,320 | 2,675,000 | 110,000 | $6.96 |
| 03/31/2021 | PSYCHEMEDICS CORP | PMD | 413,660 | -41,080 | 2,565,000 | 560,000 | $6.20 |
| 12/31/2020 | PSYCHEMEDICS CORP | PMD | 454,640 | -100 | 2,314,118 | 309,118 | $5.09 |
| 09/30/2020 | PSYCHEMEDICS CORP | PMD | 454,740 | -13,714 | 2,005,000 | -595,000 | $4.41 |
| 06/30/2020 | PSYCHEMEDICS CORP | PMD | 468,454 | 24,816 | 2,600,000 | -84,000 | $5.55 |
| 03/31/2020 | PSYCHEMEDICS CORP | PMD | 443,638 | -31,539 | 2,684,000 | -1,664,000 | $6.05 |
| 12/31/2019 | PSYCHEMEDICS CORP | PMD | 475,177 | 22,311 | 4,348,000 | 222,000 | $9.15 |
| 09/30/2019 | PSYCHEMEDICS CORP | PMD | 452,866 | 31,095 | 4,126,000 | -130,000 | $9.11 |
| 06/30/2019 | PSYCHEMEDICS CORP | PMD | 421,771 | 2,634 | 4,256,000 | -1,624,000 | $10.09 |
| 03/31/2019 | PSYCHEMEDICS CORP | PMD | 419,137 | -19,863 | 5,880,000 | -1,087,000 | $14.03 |
| 12/31/2018 | PSYCHEMEDICS CORP | PMD | 439,000 | -29,066 | 6,967,000 | -1,837,000 | $15.87 |
| 09/30/2018 | PSYCHEMEDICS CORP | PMD | 468,066 | 18,366 | 8,804,000 | 152,000 | $18.81 |
| 06/30/2018 | PSYCHEMEDICS CORP | PMD | 449,700 | -100 | 8,652,000 | -956,000 | $19.24 |
| 03/31/2018 | PSYCHEMEDICS CORP | PMD | 449,800 | -14,629 | 9,608,000 | 59,000 | $21.36 |
| 12/31/2017 | PSYCHEMEDICS CORP | PMD | 464,429 | -26,571 | 9,549,000 | 500,000 | $20.56 |
| 12/29/2017 | PSYCHEMEDICS CORP | PMD | 464,429 | -26,571 | 9,548,660 | 499,660 | $20.56 |
| 09/30/2017 | PSYCHEMEDICS CORP | PMD | 491,000 | 34,500 | 9,049,000 | -2,341,000 | $18.43 |
| 06/30/2017 | PSYCHEMEDICS CORP | PMD | 456,500 | -10,900 | 11,390,000 | 2,019,000 | $24.95 |
| 03/31/2017 | PSYCHEMEDICS CORP | PMD | 467,400 | -32,590 | 9,371,000 | -2,969,000 | $20.05 |
| 12/31/2016 | PSYCHEMEDICS CORP | PMD | 499,990 | 65,290 | 12,340,000 | 3,724,000 | $24.68 |
| 12/30/2016 | PSYCHEMEDICS CORP | PMD | 499,990 | 65,290 | 12,339,753 | 3,723,753 | $24.68 |
| 09/30/2016 | PSYCHEMEDICS CORP | PMD | 434,700 | -1,200 | 8,616,000 | 4,196,000 | $19.82 |
| 06/30/2016 | PSYCHEMEDICS CORP | PMD | 407,100 | -3,300 | 5,594,000 | -49,000 | $13.74 |
| 03/31/2016 | PSYCHEMEDICS CORP | PMD | 410,400 | -25,500 | 5,643,000 | 1,223,000 | $13.75 |
| 12/31/2015 | PSYCHEMEDICS CORP | PMD | 435,900 | 435,900 | 4,420,000 | 4,420,000 | $10.14 |
| 09/30/2015 | PSYCHEMEDICS CORP | PMD | 442,069 | 442,069 | 4,443,000 | 4,443,000 | $10.05 |
| 06/30/2015 | PSYCHEMEDICS CORP | PMD | 430,700 | 430,700 | 6,387,000 | 6,387,000 | $14.83 |
| 03/31/2015 | PSYCHEMEDICS CORP | PMD | 430,300 | 430,300 | 7,139,000 | 7,139,000 | $16.59 |
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