MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

THOMPSON SIEGEL & WALMSLEY LLC's Holding History (CIK: 0001008322)

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

Q4 2017
Shares 15 Value ($000) $1 Avg Close $93.43 Range $82.69 - $103.63
Q3 2017
Shares 15 Value ($000) $1 Avg Close $76.52 Range $62.45 - $89.48
Q2 2017
Shares 15 Value ($000) $1 Avg Close $70.74 Range $60.40 - $82.65
Q1 2017
Shares 15 Value ($000) $1 Avg Close $61.31 Range $54.85 - $65.67
Q4 2016
Shares 15 Value ($000) $1 Avg Close $50.13 Range $43.15 - $57.04
Q2 2016
Shares 347,944 Value ($000) $14,982 Avg Close $35.80 Range $32.24 - $39.81
Q1 2016
Shares 365,844 Value ($000) $13,774 Avg Close $31.35 Range $28.08 - $35.11
Q4 2015
Shares 180,046 Value ($000) $6,482 Avg Close $32.52 Range $26.43 - $35.02
Q3 2015
Shares 188,925 Value ($000) $6,335 Avg Close $31.60 Range $28.82 - $34.92
Q2 2015
Shares 221,611 Value ($000) $8,408 Avg Close $32.93 Range $29.54 - $35.95
Q1 2015
Shares 350,573 Value ($000) $11,853 Avg Close $31.63 Range $29.59 - $33.22
Q4 2014
Shares 218,026 Value ($000) $7,980 Avg Close $31.69 Range $27.30 - $33.99
Q3 2014
Shares 239,273 Value ($000) $7,987 Avg Close $29.19 Range $27.47 - $31.20
Q2 2014
Shares 577,322 Value ($000) $18,036 Avg Close $25.69 Range $23.72 - $27.88
Q1 2014
Shares 504,723 Value ($000) $15,086 Avg Close $26.46 Range $25.10 - $28.61
Q4 2013
Shares 553,332 Value ($000) $16,556 Avg Close $25.51 Range $23.10 - $27.14
Q3 2013
Shares 611,918 Value ($000) $16,271 Avg Close $23.28 Range $21.63 - $25.20
Q2 2013
Shares 655,759 Value ($000) $17,404 Avg Close $23.45 Range $21.31 - $25.25