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Equibles

JANE STREET GROUP, LLC

Position in PRLB — Proto Labs Inc

CIK 1595888 NEW YORK, NY
Back to PRLB Full portfolio

Position in PRLB

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$11,698,884
+$8,428,503 QoQ
Shares Held
143,527
+150.2% QoQ
Ownership
0.600%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#29
of 276 holders
Holding Since
Mar 2020
24 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in PRLB Over Time

Shares Held

Position Value (USD)

Derivatives in PRLB

reported options exposure · as of Jun 30, 2026
CallValue
$562,419
CallShares
6,900
PutValue
$0
PutShares
0

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Metal Fabrication

Industrials · as of Jun 30, 2026

JANE STREET GROUP, LLC holds $550,159,095 across 11 Metal Fabrication names. PRLB ranks #5 (2.1% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 ATI
Ati Inc
 1,410,930 $278,094,302
2 CRS
Carpenter Technology Corp
 356,156 $219,691,266
3 MEC
Mayville Engineering Company, Inc.
 356,151 $13,341,415
4 IIIN
Insteel Industries Inc
 438,799 $13,251,729
5 PRLB
Proto Labs Inc
This page 		143,527 $11,698,884
6 CMC
COMMERCIAL METALS Co
 84,544 $5,305,135
7 WOR
Worthington Enterprises, Inc.
 95,565 $5,137,574
8 AP
Ampco Pittsburgh Corp
 150,371 $1,300,708

All Filings in PRLB

Export CSV
45 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $562,419 6,900
2026-06-30 $11,698,884 143,527
2026-03-31 $3,270,381 57,355
2026-03-31 $376,332 6,600
2025-12-31 $298,481 5,900
2025-12-31 $5,595,000 110,595
2025-09-30 $3,256,451 65,090
2025-06-30 $3,060,096 76,426
2025-06-30 $440,440 11,000
2025-03-31 $2,613,773 74,594
2025-03-31 $371,424 10,600
2024-12-31 $2,265,459 57,955
2024-09-30 $2,867,186 97,623
2024-06-30 $1,453,899 47,067
2023-12-31 $1,019,621 26,171
2023-06-30 $1,408,048 40,276
2023-03-31 $267,222 8,061
2022-12-31 $2,791,220 109,331
2022-09-30 $947,944 26,021
2022-06-30 $916,183 19,151
2022-03-31 $1,000,073 18,905
2022-03-31 $1,740,410 32,900
2022-03-31 $1,766,860 33,400
2021-12-31 $1,756,170 34,200
2021-12-31 $510,264 9,937
2021-12-31 $2,315,885 45,100
2021-09-30 $1,665,000 25,000
2021-09-30 $4,229,100 63,500
2021-09-30 $2,522,407 37,874
2021-06-30 $4,635,900 50,500
2021-06-30 $3,203,360 34,895
2021-06-30 $2,570,400 28,000
2021-03-31 $7,609,375 62,500
2021-03-31 $1,972,350 16,200
2021-03-31 $4,670,451 38,361
2020-12-31 $3,881,020 25,300
2020-12-31 $8,596,536 56,040
2020-12-31 $3,927,040 25,600
2020-09-30 $3,600,100 27,800
2020-09-30 $5,856,119 45,221
2020-09-30 $3,457,650 26,700
2020-06-30 $1,956,978 17,400
2020-06-30 $3,516,036 31,262
2020-06-30 $798,537 7,100
2020-03-31 $280,615 3,686

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