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ADTRAN INC
ADTRAN INC. Institutional holdings reported to the SEC.

Institutional Holders (2015Q1)
Portfolio Summary: 3 Institutional holders with a total value of $327,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 CITADEL ADVISORS LLC 16,800 314,000 96.02% Call
2 GROUP ONE TRADING LLC 400 7,000 2.14% Call
3 SIMPLEX TRADING, LLC 11 6,000 1.83% Call

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.