Proto Labs, Inc.
US ˙ NYSE ˙ US7437131094

SecurityPRLB / Proto Labs, Inc.
InstitutionSmartleaf Asset Management LLC
Latest Disclosed Ownership63 shares
Latest Disclosed Value $ 3,489
Smartleaf Asset Management LLC reports 80.79% decrease in ownership of PRLB / Proto Labs, Inc.

On May 15, 2026 - Smartleaf Asset Management LLC filed a 13F-HR form disclosing ownership of 63 shares of Proto Labs, Inc. (US:PRLB) valued at $3,592 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 328 shares of Proto Labs, Inc.. This represents a change in shares of -80.79% during the quarter. The current value of the position is $4,709 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 63 -265 -80.79 3 -81.25 0.0001
2026-02-13 2025-12-31 13F PROTO LABS COM 743713109 328 28 9.33 17 14.29 0.0006
2025-11-05 2025-09-30 13F PROTO LABS COM 743713109 300 -19 -5.96 15 16.67 0.0009
2025-08-14 2025-06-30 13F PROTO LABS COM 743713109 319 -69 -17.78 13 -7.69 0.0011
2025-05-14 2025-03-31 13F PROTO LABS COM 743713109 388 -96 -19.83 14 -31.58 0.0013
2025-02-05 2024-12-31 13F PROTO LABS COM 743713109 484 327 208.28 19 375.00 0.0019
2024-11-13 2024-09-30 13F PROTO LABS COM 743713109 157 22 16.30 5 0.00 0.0006
2024-10-08 2024-06-30 13F/A-1 PROTO LABS COM 743713109 135 122 938.46 4 0.0007
2024-08-13 2024-06-30 13F PROTO LABS COM 743713109 135 122 4 0.0007
2024-10-07 2024-03-31 13F/A-1 PROTO LABS COM 743713109 13 13 0 0.0001
2024-05-03 2024-03-31 13F PROTO LABS COM 743713109 13 13 1 0.0001
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.