STEEL DYNAMICS INC

Ticker: STLD CUSIP: 858119100 Class: COMMON STOCK

FRONTIER CAPITAL MANAGEMENT CO LLC's Holding History (CIK: 0000351173)

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

Q1 2018
Shares 217,253 Value ($000) $9,607 Avg Close $39.00 Range $34.83 - $42.94
Q4 2017
Shares 218,033 Value ($000) $9,404 Avg Close $32.46 Range $28.33 - $37.17
Q3 2017
Shares 223,179 Value ($000) $7,693 Avg Close $29.48 Range $27.05 - $32.51
Q2 2017
Shares 226,592 Value ($000) $8,114 Avg Close $28.97 Range $26.88 - $31.37
Q1 2017
Shares 228,791 Value ($000) $7,953 Avg Close $29.67 Range $27.09 - $32.02
Q4 2016
Shares 232,739 Value ($000) $8,281 Avg Close $26.10 Range $19.35 - $33.31
Q3 2016
Shares 234,997 Value ($000) $5,873 Avg Close $21.06 Range $18.79 - $23.10
Q2 2016
Shares 235,182 Value ($000) $5,762 Avg Close $20.03 Range $17.68 - $22.12
Q1 2016
Shares 240,601 Value ($000) $5,416 Avg Close $15.36 Range $12.48 - $18.79