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RHUMBLINE ADVISERS

Position in PRLB — Proto Labs Inc

CIK 1115418 BOSTON, MA

Position in PRLB

as of Jun 30, 2026 · filed Aug 12, 2026
Position Value
$4,725,134
+$1,012,334 QoQ
Shares Held
57,970
-11.0% QoQ
Ownership
0.242%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#47
of 276 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 48% Shared 0% None 52%

Common Shares in PRLB Over Time

Shares Held

Position Value (USD)

Position in Metal Fabrication

Industrials · as of Jun 30, 2026

RHUMBLINE ADVISERS holds $253,752,982 across 13 Metal Fabrication names. PRLB ranks #6 (1.9% of the industry book) .

# Ticker Company Shares Value (USD) Open
6 PRLB
Proto Labs Inc
This page
57,970 $4,725,134

All Filings in PRLB

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26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $4,725,134 57,970
2026-03-31 $3,712,800 65,114
2025-12-31 $3,273,931 64,715
2025-09-30 $3,641,183 72,780
2025-06-30 $2,965,762 74,070
2025-03-31 $2,628,525 75,015
2024-12-31 $3,079,627 78,783
2024-09-30 $2,304,957 78,480
2024-06-30 $2,505,240 81,102
2024-03-31 $3,039,107 85,010
2023-12-31 $3,304,743 84,824
2023-09-30 $2,331,199 88,303
2023-06-30 $3,124,724 89,380
2023-03-31 $2,959,665 89,281
2022-12-31 $2,202,243 86,261
2022-09-30 $3,087,988 84,765
2022-06-30 $3,907,140 81,671
2022-03-31 $4,173,862 78,901
2021-12-31 $4,047,817 78,828
2021-09-30 $4,976,818 74,727
2021-06-30 $7,805,662 85,029
2021-03-31 $9,246,547 75,947
2020-12-31 $11,272,138 73,482
2020-09-30 $9,316,230 71,940
2020-06-30 $9,034,715 80,330
2020-03-31 $6,453,387 84,768