SpiderRock Trading LLC - NANOMETRICS INC ownership

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NANOMETRICS INC's ticker is and the CUSIP is 63007710.

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Quarter-by-quarter ownership
SpiderRock Trading LLC ownership history of NANOMETRICS INC
ValueSharesWeighting
Q4 2014$3,000
-57.1%
500
-45.5%
0.01%
-75.0%
Q1 2014$7,000–918
-8.2%
0.04%–
Q4 2013$0–1,000–0.00%–
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Other shareholders
NANOMETRICS INC shareholders Q1 2015
NameSharesValueWeighting ↓
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 18,480$337,0000.00%
View complete list of NANOMETRICS INC shareholders