HOUGHTON MIFFLIN HARCOURT CO

CUSIP: 44157R109 Class: COM

SIMPLEX TRADING, LLC's Holding History (CIK: 0001488542)

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

Q1 2022
Shares 1,481 Value ($000) $31 Avg Close — Range —
Q4 2021
Shares 22,100 Value ($000) $355 Avg Close — Range —
Q3 2020
Shares 6,107 Value ($000) $10 Avg Close — Range —
Q1 2020
Shares 2,512 Value ($000) $4 Avg Close — Range —
Q4 2019
Shares 434 Value ($000) $2 Avg Close — Range —
Q3 2019
Shares 1,469 Value ($000) $7 Avg Close — Range —
Q2 2019
Shares 267 Value ($000) $1 Avg Close — Range —
Q1 2019
Shares 16 Value ($000) $0 Avg Close — Range —
Q4 2018
Shares 375 Value ($000) $3 Avg Close — Range —
Q3 2018
Shares 1,562 Value ($000) $10 Avg Close — Range —
Q1 2017
Shares 1,150 Value ($000) $11 Avg Close — Range —
Q4 2016
Shares 1,075 Value ($000) $11 Avg Close — Range —
Q1 2016
Shares 526 Value ($000) $10 Avg Close — Range —
Q1 2015
Shares 480 Value ($000) $11 Avg Close — Range —