Proto Labs shares owned by Tower Research Capital
Quarter-by-quarter ownership of Proto Labs (PRLB) shares owned by Tower Research Capital
from 13F filings
Historical chart of Tower Research Capital investment in Proto Labs
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Quarterly reported holdings in Proto Labs by Tower Research Capital
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-09-30 | $64k | 1.3k | 50.03 |
| 2025-06-30 | $112k | 2.8k | 40.04 |
| 2025-03-31 | $21k | 606 | 35.04 |
| 2024-12-31 | $161k | 4.1k | 39.09 |
| 2024-09-30 | $428k | 15k | 29.37 |
| 2024-06-30 | $106k | 3.4k | 30.80 |
| 2024-03-31 | $39k | 1.1k | 35.75 |
| 2023-09-30 | $121k | 4.6k | 26.40 |
| 2023-06-30 | $28k | 787 | 34.96 |
| 2023-03-31 | $20k | 607 | 32.95 |
| 2022-12-31 | $25k | 990 | 25.60 |
| 2022-09-30 | $89k | 2.5k | 36.35 |
| 2022-06-30 | $75k | 1.5k | 48.36 |
| 2022-03-31 | $15k | 285 | 52.63 |
| 2021-12-31 | $178k | 3.5k | 51.45 |
| 2021-09-30 | $26k | 283 | 90.91 |
| 2021-03-31 | $4.3M | 36k | 121.77 |
| 2020-12-31 | $493k | 3.2k | 152.93 |
| 2020-09-30 | $2.6M | 20k | 129.39 |
| 2020-06-30 | $782k | 7.0k | 112.41 |
| 2020-03-31 | $3.0k | 33 | 90.91 |
| 2019-09-30 | $85k | 837 | 101.55 |
| 2018-06-30 | $649k | 5.5k | 118.91 |
| 2018-03-31 | $340k | 2.9k | 117.57 |
| 2017-12-31 | $132k | 1.3k | 103.12 |
| 2017-09-30 | $59k | 736 | 80.16 |
| 2017-03-31 | $15k | 300 | 50.00 |
| 2016-12-31 | $22k | 419 | 52.51 |
| 2016-06-30 | $153k | 2.7k | 57.58 |
| 2016-03-31 | $30k | 387 | 77.52 |
| 2015-12-31 | $25k | 400 | 62.50 |
| 2015-09-30 | $97k | 1.4k | 66.96 |
| 2015-03-31 | $63k | 898 | 70.00 |
| 2014-12-31 | $15k | 217 | 69.12 |
| 2013-12-31 | $97k | 1.4k | 70.91 |
| 2013-09-30 | $144k | 1.9k | 76.58 |
| 2013-06-30 | $46k | 710 | 64.79 |