Proto Labs, Inc.
DE ˙ DB ˙ US7437131094
64,05 € ↓ -2,90 (-4,33%)
2026-06-03
DEL PRIS
SecurityDE:PRZ / Proto Labs, Inc.
InstitutionState Street Corp
Latest Disclosed Ownership1,092,000 shares
Latest Disclosed Value $ 62,265,840
State Street Corp reports 0.35% increase in ownership of PRZ / Proto Labs, Inc.

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 1,092,000 shares of Proto Labs, Inc. (DE:PRZ) valued at $53,529,840 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,088,206 shares of Proto Labs, Inc.. This represents a change in shares of 0.35% during the quarter. The current value of the position is $69,942,600 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)
2026-05-15 2026-03-31 13F PROTO LABS COM 743713109 1,092,000 3,794 0.35 62,266 13.10 0.0021
2026-02-13 2025-12-31 13F PROTO LABS COM 743713109 1,088,206 -87,094 -7.41 55,052 -6.37 0.0018
2025-11-14 2025-09-30 13F PROTO LABS COM 743713109 1,175,300 -11,143 -0.94 58,800 23.78 0.0020
2025-08-14 2025-06-30 13F PROTO LABS COM 743713109 1,186,443 65,430 5.84 47,505 20.94 0.0018
2025-05-15 2025-03-31 13F PROTO LABS COM 743713109 1,121,013 -28,007 -2.44 39,280 -12.55 0.0016
2025-02-14 2024-12-31 13F PROTO LABS COM 743713109 1,149,020 183,594 19.02 44,915 58.41 0.0018
2024-11-14 2024-09-30 13F PROTO LABS COM 743713109 965,426 13,554 1.42 28,355 -3.57 0.0012
2024-08-14 2024-06-30 13F PROTO LABS COM 743713109 951,872 -195,427 -17.03 29,403 -28.31 0.0013
2024-05-15 2024-03-31 13F PROTO LABS COM 743713109 1,147,299 32,073 2.88 41,016 -5.60 0.0018
2024-02-14 2023-12-31 13F PROTO LABS COM 743713109 1,115,226 -19,532 -1.72 43,449 45.04 0.0021
2023-11-14 2023-09-30 13F PROTO LABS COM 743713109 1,134,758 -13,907 -1.21 29,958 -25.40 0.0017
2023-08-14 2023-06-30 13F PROTO LABS COM 743713109 1,148,665 -15,850 -1.36 40,157 4.03 0.0021
2023-05-15 2023-03-31 13F PROTO LABS COM 743713109 1,164,515 -6,159 -0.53 38,604 29.16 0.0022
2023-05-15 2022-12-31 13F/A-99 PROTO LABS COM 743713109 1,170,674 48,567 4.33 29,887 -26.89 0.0018
2023-05-15 2022-12-31 13F PROTO LABS COM 743713109 1,170,674 48,567 29,887 0.0018
2022-11-15 2022-09-30 13F PROTO LABS COM 743713109 1,122,107 1,643 0.15 40,878 -23.74 0.0026
2022-08-15 2022-06-30 13F PROTO LABS COM 743713109 1,120,464 85,135 8.22 53,603 -2.13 0.0032
2022-05-16 2022-03-31 13F PROTO LABS COM 743713109 1,035,329 37,314 3.74 54,769 6.87 0.0027
2022-02-14 2021-12-31 13F PROTO LABS COM 743713109 998,015 81,223 8.86 51,248 -16.07 0.0024
2021-11-15 2021-09-30 13F PROTO LABS COM 743713109 916,792 14,370 1.59 61,058 -26.30 0.0032
2021-08-16 2021-06-30 13F PROTO LABS COM 743713109 902,422 80,674 9.82 82,842 -17.20 0.0044
2021-07-09 2021-03-31 13F/A-1 PROTO LABS COM 743713109 821,748 18,660 2.32 100,048 -18.79 0.0057
2021-05-17 2021-03-31 13F PROTO LABS COM 743713109 821,748 18,660 100,048 0.0057
2021-02-16 2020-12-31 13F PROTO LABS COM 743713109 803,088 -31,400 -3.76 123,194 14.00 0.0075
2020-11-10 2020-09-30 13F PROTO LABS COM 743713109 834,488 -21,385 -2.50 108,066 12.26 0.0074
2020-08-14 2020-06-30 13F PROTO LABS COM 743713109 855,873 5,641 0.66 96,260 48.71 0.0070
2020-06-19 2020-03-31 13F/A-1 PROTO LABS COM 743713109 850,232 78,257 10.14 64,728 -17.43 0.0057
2020-05-11 2020-03-31 13F PROTO LABS COM 743713109 850,232 78,257 64,728 5,684.4217
2020-02-06 2019-12-31 13F PROTO LABS COM 743713109 771,975 10,204 1.34 78,394 0.79 0.0054
2019-11-14 2019-09-30 13F PROTO LABS COM 743713109 761,771 102 0.01 77,777 -11.99 0.0058
2019-08-14 2019-06-30 13F PROTO LABS COM 743713109 761,669 19,423 2.62 88,369 13.24 0.0066
2019-05-15 2019-03-31 13F PROTO LABS COM 743713109 742,246 17,327 2.39 78,040 -4.55 0.0061
2019-02-12 2018-12-31 13F PROTO LABS COM 743713109 724,919 -30,926 -4.09 81,764 -33.12 0.0074
2018-11-09 2018-09-30 13F PROTO LABS Common equity shares 743713109 755,845 62,919 9.08 122,256 48.33 0.0094
2018-08-14 2018-06-30 13F PROTO LABS Common equity shares 743713109 692,926 62,300 9.88 82,424 11.18 0.0069
2018-05-15 2018-03-31 13F PROTO LABS Common equity shares 743713109 630,626 24,430 4.03 74,133 18.72 0.0063
2018-02-14 2017-12-31 13F PROTO LABS Common equity shares 743713109 606,196 18,957 3.23 62,441 32.43 0.0050
2017-11-14 2017-09-30 13F PROTO LABS Common equity shares 743713109 587,239 -8,509 -1.43 47,150 17.69 0.0041
2017-08-14 2017-06-30 13F PROTO LABS Common equity shares 743713109 595,748 29,561 5.22 40,063 38.48 0.0035
2017-05-15 2017-03-31 13F PROTO LABS Common equity shares 743713109 566,187 49,121 9.50 28,931 8.96 0.0026
2017-02-09 2016-12-31 13F PROTO LABS Common equity shares 743713109 517,066 29,689 6.09 26,552 -9.08 0.0025
2017-01-13 2016-09-30 13F/A-1 PROTO LABS Common equity shares 743713109 487,377 32,706 7.19 29,203 11.59 0.0029
2016-11-14 2016-09-30 13F PROTO LABS Common equity shares 743713109 487,377 29,203
2016-08-12 2016-06-30 13F PROTO LABS Common equity shares 743713109 454,671 12,574 2.84 26,170 -23.21 0.0028
2016-05-20 2016-03-31 13F/A-1 PROTO LABS Common equity shares 743713109 442,097 71,609 19.33 34,079 44.45 0.0037
2016-05-12 2016-03-31 13F PROTO LABS Common equity shares 743713109 442,097 34,079
2016-02-16 2015-12-31 13F PROTO LABS Common equity shares 743713109 370,488 4,389 1.20 23,593 -3.82 0.0026
2015-11-16 2015-09-30 13F PROTO LABS Common equity shares 743713109 366,099 -4,380 -1.18 24,529 -1.87 0.0029
2015-08-13 2015-06-30 13F PROTO LABS Common equity shares 743713109 370,479 7,290 2.01 24,997 -1.68 0.0027
2015-05-15 2015-03-31 13F PROTO LABS Common equity shares 743713109 363,189 6,598 1.85 25,423 6.17 0.0026
2015-02-11 2014-12-31 13F PROTO LABS Common equity shares 743713109 356,591 2,946 0.83 23,945 -1.90 0.0024
2014-11-12 2014-09-30 13F/A-1 PROTO LABS Common equity shares 743713109 353,645 11,921 3.49 24,408 -12.81 0.0026
2014-11-10 2014-09-30 13F PROTO LABS Common equity shares 743713109 353,645 24,408
2014-08-12 2014-06-30 13F PROTO LABS Common equity shares 743713109 341,724 43,026 14.40 27,993 38.53 0.0030
2014-05-15 2014-03-31 13F/A-1 PROTO LABS Common equity shares 743713109 298,698 4,878 1.66 20,207 -3.38 0.0023
2014-05-13 2014-03-31 13F PROTO LABS Common equity shares 743713109 298,698 20,207
2014-02-06 2013-12-31 13F/A-1 PROTO LABS Common equity shares 743713109 293,820 22,291 8.21 20,913 0.83 0.0023
2014-02-06 2013-12-31 13F PROTO LABS Common equity shares 743713109 87,634 3,456
2013-11-12 2013-09-30 13F PROTO LABS Common equity shares 743713109 271,529 28,456 11.71 20,740 31.37 0.0026
2013-08-08 2013-06-30 13F PROTO LABS Common equity shares 743713109 243,073 243,073 15,788 0.0021
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.