HOUGHTON MIFFLIN HARCOURT CO

CUSIP: 44157R109 Class: COM

Laurion Capital Management LP's Holding History (CIK: 0001390202)

Note: Option positions (PUT/CALL) are excluded.

Q4 2020
Shares 463,975 Value ($000) $1,545 Avg Close — Range —
Q3 2016
Shares 160,912 Value ($000) $2,158 Avg Close — Range —
Q2 2016
Shares 1,145,332 Value ($000) $17,902 Avg Close — Range —
Q1 2016
Shares 25,867 Value ($000) $516 Avg Close — Range —