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PROTO LABS INC COM
PROTO LABS INC COM. Institutional holdings reported to the SEC.

Institutional Holders (2017Q1)
Portfolio Summary: 203 Institutional holders with a total value of $1,411,319,435.
#
Manager Name
Shares
Value ($)
%
Options
Notes
101 STIFEL FINANCIAL CORP 15,437 786,000 0.06%
102 WOLVERINE TRADING LP /BD 15,900 811,000 0.06% Put
103 CHATHAM CAPITAL GROUP, INC. 15,890 812,000 0.06%
104 PRICE T ROWE ASSOCIATES INC /MD/ 15,989 817,000 0.06%
105 KORNITZER CAPITAL MANAGEMENT INC /KS 16,500 843,000 0.06%
106 Walleye Trading LLC 16,900 862,000 0.06% Put
107 Hutchin Hill Capital, LP 17,000 869,000 0.06%
108 PUBLIC SECTOR PENSION INVESTMENT BOARD 17,200 879,000 0.06%
109 METROPOLITAN LIFE INSURANCE CO/NY 17,435 891,000 0.06%
110 Redmond Asset Management, LLC 17,460 892,000 0.06%
111 TEXAS PERMANENT SCHOOL FUND CORP 17,670 903,000 0.06%
112 WOLVERINE TRADING LP /BD 18,700 954,000 0.07% Call
113 MANUFACTURERS LIFE INSURANCE COMPANY, THE 19,140 978,000 0.07%
114 PEAK6 Group LLC 19,200 981,000 0.07% Call
115 Gotham Asset Management, LLC 20,205 1,032,000 0.07%
116 CITIGROUP INC 21,873 1,118,000 0.08%
117 FLINTON CAPITAL MANAGEMENT LLC 22,032 1,126,000 0.08%
118 State of Tennessee, Department of Treasury 22,130 1,131,000 0.08%
119 CREDIT SUISSE AG/ 23,344 1,193,000 0.08%
120 Walleye Trading LLC 23,800 1,217,000 0.09% Call
121 CITADEL ADVISORS LLC 26,842 1,372,000 0.10%
122 PEAK6 Group LLC 26,900 1,375,000 0.10% Put
123 MEADOW CREEK INVESTMENT MANAGEMENT LLC 30,294 1,548,000 0.11%
124 COMERICA BANK 27,133 1,586,000 0.11%
125 Invesco Ltd. 31,375 1,603,000 0.11%
126 BENDER ROBERT & ASSOCIATES 32,317 1,651,000 0.12%
127 CANADA LIFE ASSURANCE Co 34,194 1,746,000 0.12%
128 STATE OF WISCONSIN INVESTMENT BOARD 34,350 1,755,000 0.12%
129 ALLIANCEBERNSTEIN L.P. 38,350 1,960,000 0.14%
130 GLEN HARBOR CAPITAL MANAGEMENT LLC 38,556 1,970,000 0.14%
131 PARAMETRIC PORTFOLIO ASSOCIATES LLC 39,125 1,999,000 0.14%
132 WASATCH ADVISORS LP 39,280 2,007,000 0.14%
133 Motley Fool Asset Management LLC 40,000 2,044,000 0.14%
134 CREDIT AGRICOLE S A 40,120 2,050,000 0.15%
135 Swiss National Bank 41,200 2,105,000 0.15%
136 PRUDENTIAL FINANCIAL INC 41,510 2,121,000 0.15%
137 Legal & General Group Plc 42,259 2,160,000 0.15%
138 Grandeur Peak Global Advisors, LLC 42,275 2,160,000 0.15%
139 Century Capital Management, LLC 44,316 2,265,000 0.16%
140 TEACHERS ADVISORS, LLC 44,891 2,294,000 0.16%
141 SECOR Capital Advisors, LP 45,551 2,328,000 0.16%
142 SUSQUEHANNA INTERNATIONAL GROUP, LLP 45,600 2,330,000 0.17% Put
143 ROYCE & ASSOCIATES LP 46,025 2,352,000 0.17%
144 Motley Fool Wealth Management, LLC 46,245 2,363,000 0.17%
145 RHUMBLINE ADVISERS 46,690 2,386,000 0.17%
146 ELKFORK PARTNERS LLC 46,818 2,393,000 0.17%
147 BANK OF MONTREAL /CAN/ 47,392 2,422,000 0.17%
148 UNITED SERVICES AUTOMOBILE ASSOCIATION 48,000 2,453,000 0.17%
149 Granahan Investment Management, LLC 48,000 2,453,000 0.17%
150 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 48,628 2,485,000 0.18%
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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.