Proto Labs shares owned by Rhumbline Advisers
Quarter-by-quarter ownership of Proto Labs (PRLB) shares owned by Rhumbline Advisers
from 13F filings
Historical chart of Rhumbline Advisers investment in Proto Labs
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Quarterly reported holdings in Proto Labs by Rhumbline Advisers
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-09-30 | $3.6M | 73k | 50.03 |
| 2025-06-30 | $3.0M | 74k | 40.04 |
| 2025-03-31 | $2.6M | 75k | 35.04 |
| 2024-12-31 | $3.1M | 79k | 39.09 |
| 2024-09-30 | $2.3M | 79k | 29.37 |
| 2024-06-30 | $2.5M | 81k | 30.89 |
| 2024-03-31 | $3.0M | 85k | 35.75 |
| 2023-12-31 | $3.3M | 85k | 38.96 |
| 2023-09-30 | $2.3M | 88k | 26.40 |
| 2023-06-30 | $3.1M | 89k | 34.96 |
| 2023-03-31 | $3.0M | 89k | 33.15 |
| 2022-12-31 | $2.2M | 86k | 25.53 |
| 2022-09-30 | $3.1M | 85k | 36.43 |
| 2022-06-30 | $3.9M | 82k | 47.84 |
| 2022-03-31 | $4.2M | 79k | 52.90 |
| 2021-12-31 | $4.0M | 79k | 51.35 |
| 2021-09-30 | $5.0M | 75k | 66.60 |
| 2021-06-30 | $7.8M | 85k | 91.80 |
| 2021-03-31 | $9.2M | 76k | 121.76 |
| 2020-12-31 | $11M | 74k | 153.40 |
| 2020-09-30 | $9.3M | 72k | 129.50 |
| 2020-06-30 | $9.0M | 80k | 112.47 |
| 2020-03-31 | $6.5M | 85k | 76.13 |
| 2019-12-31 | $8.6M | 85k | 101.55 |
| 2019-09-30 | $8.2M | 80k | 102.10 |
| 2019-06-30 | $9.1M | 79k | 116.02 |
| 2019-03-31 | $8.0M | 77k | 105.14 |
| 2018-12-31 | $8.6M | 76k | 112.79 |
| 2018-09-30 | $10M | 62k | 161.75 |
| 2018-06-30 | $7.3M | 61k | 118.96 |
| 2018-03-31 | $6.8M | 58k | 117.54 |
| 2017-12-31 | $5.8M | 56k | 103.00 |
| 2017-09-30 | $3.8M | 48k | 80.29 |
| 2017-06-30 | $3.1M | 47k | 67.26 |
| 2017-03-31 | $2.4M | 47k | 51.10 |
| 2016-12-31 | $1.7M | 33k | 51.35 |
| 2016-09-30 | $1.9M | 31k | 59.92 |
| 2016-06-30 | $1.7M | 29k | 57.54 |
| 2016-03-31 | $2.1M | 28k | 77.10 |
| 2015-12-31 | $1.4M | 23k | 63.70 |
| 2015-09-30 | $1.4M | 21k | 67.01 |
| 2015-06-30 | $1.4M | 21k | 67.48 |
| 2015-03-31 | $1.5M | 21k | 69.98 |
| 2014-12-31 | $1.2M | 18k | 67.18 |
| 2014-09-30 | $1.4M | 20k | 69.01 |
| 2014-06-30 | $1.6M | 20k | 81.92 |
| 2014-03-31 | $1.0M | 15k | 67.66 |
| 2013-12-31 | $1.2M | 17k | 71.20 |
| 2013-09-30 | $1.3M | 17k | 76.38 |
| 2013-06-30 | $1.0M | 16k | 64.96 |
| 2013-03-31 | $292k | 5.9k | 49.11 |
| 2012-12-31 | $252k | 6.4k | 39.46 |