Dark
Light
System
Security
PROTO LABS INC
PROTO LABS INC. Institutional holdings reported to the SEC.

Institutional Holders (2014Q3)
Portfolio Summary: 3 Institutional holders with a total value of $2,111,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 CITADEL ADVISORS LLC 22,700 1,566,000 74.18% Put
2 GROUP ONE TRADING LLC 4,800 331,000 15.68% Put
3 PEAK6 Group LLC 3,100 214,000 10.14% Put

From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.