Proto Labs, Inc.
US ˙ NYSE ˙ US7437131094

SecurityPRLB / Proto Labs, Inc.
InstitutionLPL Financial LLC
Latest Disclosed Ownership3,934 shares
Latest Disclosed Value $ 224,317
LPL Financial LLC ownership in PRLB / Proto Labs, Inc.

On May 6, 2026 - LPL Financial LLC filed a 13F-HR form disclosing ownership of 3,934 shares of Proto Labs, Inc. (US:PRLB) valued at $224,317 USD as of March 31, 2026. The entity filed a previous 13F-HR on May 7, 2025 disclosing 0 shares of Proto Labs, Inc.. The current value of the position is $293,752 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-06 2026-03-31 13F PROTO LABS COM 743713109 3,934 3,934 224 0.0001
2025-05-07 2025-03-31 13F PROTO LABS COM 743713109 0 -5,366 -100.00 0 -100.00
2025-02-11 2024-12-31 13F PROTO LABS COM 743713109 5,366 5,366 210 0.0001
2024-11-08 2024-09-30 13F PROTO LABS COM 743713109 0 -6,950 -100.00 0 -100.00
2024-08-07 2024-06-30 13F PROTO LABS COM 743713109 6,950 -588 -7.80 215 -20.45 0.0001
2024-05-10 2024-03-31 13F PROTO LABS COM 743713109 7,538 159 2.15 269 -6.27 0.0001
2024-02-14 2023-12-31 13F PROTO LABS COM 743713109 7,379 -602 -7.54 287 36.67 0.0002
2023-11-13 2023-09-30 13F PROTO LABS COM 743713109 7,981 -178 -2.18 211 -26.32 0.0001
2023-07-31 2023-06-30 13F PROTO LABS COM 743713109 8,159 255 3.23 285 8.78 0.0002
2023-05-10 2023-03-31 13F PROTO LABS COM 743713109 7,904 50 0.64 262 31.00 0.0002
2023-02-07 2022-12-31 13F PROTO LABS COM 743713109 7,854 -1,545 -16.44 201 -41.52 0.0002
2022-11-14 2022-09-30 13F PROTO LABS COM 743713109 9,399 -1,838 -16.36 342 -36.43 0.0003
2022-08-12 2022-06-30 13F PROTO LABS COM 743713109 11,237 -865 -7.15 538 -15.94 0.0005
2022-05-16 2022-03-31 13F PROTO LABS COM 743713109 12,102 -1,171 -8.82 640 -6.16 0.0005
2022-02-14 2021-12-31 13F PROTO LABS COM 743713109 13,273 -2,787 -17.35 682 -36.26 0.0006
2021-11-15 2021-09-30 13F PROTO LABS COM 743713109 16,060 -5,891 -26.84 1,070 -46.90 0.0010
2021-08-13 2021-06-30 13F PROTO LABS COM 743713109 21,951 4,381 24.93 2,015 -5.80 0.0020
2021-05-14 2021-03-31 13F PROTO LABS COM 743713109 17,570 7,286 70.85 2,139 35.55 0.0025
2021-02-12 2020-12-31 13F PROTO LABS COM 743713109 10,284 3,488 51.32 1,578 79.32 0.0020
2020-11-09 2020-09-30 13F PROTO LABS COM 743713109 6,796 1,170 20.80 880 39.02 0.0014
2020-08-13 2020-06-30 13F PROTO LABS COM 743713109 5,626 1,520 37.02 633 102.24 0.0011
2020-05-14 2020-03-31 13F PROTO LABS COM 743713109 4,106 1,353 49.15 313 11.79 0.0007
2020-02-14 2019-12-31 13F PROTO LABS COM 743713109 2,753 -464 -14.42 280 -14.63 0.0005
2019-11-13 2019-09-30 13F PROTO LABS COM 743713109 3,217 407 14.48 328 0.61 0.0007
2019-08-09 2019-06-30 13F PROTO LABS COM 743713109 2,810 -969 -25.64 326 -17.88 0.0007
2019-05-08 2019-03-31 13F PROTO LABS COM 743713109 3,779 364 10.66 397 3.12 0.0009
2019-02-07 2018-12-31 13F PROTO LABS COM 743713109 3,415 255 8.07 385 -24.66 0.0010
2018-11-14 2018-09-30 13F PROTO LABS COM 743713109 3,160 -365 -10.35 511 21.96 0.0012
2018-08-14 2018-06-30 13F PROTO LABS COM 743713109 3,525 10 0.28 419 1.45 0.0011
2018-05-15 2018-03-31 13F PROTO LABS COM 743713109 3,515 231 7.03 413 22.19 0.0011
2018-02-14 2017-12-31 13F PROTO LABS COM 743713109 3,284 -233 -6.62 338 19.86 0.0010
2017-11-14 2017-09-30 13F PROTO LABS COM 743713109 3,517 -1,828 -34.20 282 -21.45 0.0010
2017-08-14 2017-06-30 13F PROTO LABS COM 743713109 5,345 5,345 359 0.0014
2017-05-15 2017-03-31 13F PROTO LABS COM 743713109 0 -4,962 -100.00 0 -100.00
2017-02-13 2016-12-31 13F PROTO LABS COM 743713109 4,962 1,190 31.55 259 17.19 0.0020
2016-11-16 2016-09-30 13F PROTO LABS COM 743713109 3,772 -2,541 -40.25 221 -38.10 0.0021
2016-08-15 2016-06-30 13F PROTO LABS COM 743713109 6,313 -24,929 -79.79 357 -85.25 0.0030
2016-05-16 2016-03-31 13F PROTO LABS COM 743713109 31,242 20,270 184.74 2,421 245.86 0.0067
2016-02-12 2015-12-31 13F PROTO LABS COM 743713109 10,972 2,459 28.89 700 23.02 0.0019
2015-11-13 2015-09-30 13F PROTO LABS COM 743713109 8,513 1,297 17.97 569 15.65 0.0031
2015-08-14 2015-06-30 13F PROTO LABS COM 743713109 7,216 343 4.99 492 0.20 0.0025
2015-05-14 2015-03-31 13F PROTO LABS COM 743713109 6,873 1,610 30.59 491 39.09 0.0025
2015-02-13 2014-12-31 13F PROTO LABS COM 743713109 5,263 80 1.54 353 0.86 0.0019
2014-11-10 2014-09-30 13F PROTO LABS COM 743713109 5,183 904 21.13 350 -0.28 0.0021
2014-08-05 2014-06-30 13F/A-1 PROTO LABS COM 743713109 4,279 -315 -6.86 351 12.86 0.0020
2014-08-05 2014-06-30 13F PROTO LABS COM 743713109 4,279 1,693
2014-05-12 2014-03-31 13F PROTO LABS COM 743713109 4,594 -699 -13.21 311 -17.51 0.0019
2014-02-13 2013-12-31 13F PROTO LABS COM 743713109 5,293 304 6.09 377 -2.84 0.0024
2013-11-04 2013-09-30 13F PROTO LABS COM 743713109 4,989 -359 -6.71 388 11.82 0.0026
2013-08-15 2013-06-30 13F PROTO LABS COM 743713109 5,348 5,348 347 0.0025
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.