Lee John Tseng-Chung

Track

Insider profile

Performance

Overall performance
Performance over holding periods
30 days 90 days 120 days
Average return 8% 8.2% 15.1%
Success rate 100% 68% 82%
Transactions
4 0% Buy
34 71% Buy
47 69% Buy
Ranking by holding-period performance
Lee John Tseng-Chung's trades of MKS Inc's stock


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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date Company B/S Transaction type Nb. shares
Price
Value 		Number of shares Price Value Details
2026-05-26 2026-05-22
US MKS Inc (MKSI)
PlS Planned sale
50,245 -22.9%
295.99
US$1,417,110 		50,245 -22.9% 295.99 US$1,417,110
2026-05-22 2026-05-22
US MKS Inc (MKSI)
PrS Proposed sale
49,843
320.65
US$3,171,358 		49,843 320.65 US$3,171,358
2026-02-23 2026-02-20
US MKS Inc (MKSI)
S Sale
69,322 -29.9%
91.77
US$147,720 		69,322 -29.9% 91.77 US$147,720
2026-02-23 2026-02-20
US MKS Inc (MKSI)
S Sale
1,988 -1.3%
257.81
US$512,523 		1,988 -1.3% 257.81 US$512,523
2026-02-23 2026-02-20
US MKS Inc (MKSI)
S Sale
12,812 -7.5%
256.93
US$3,291,804 		12,812 -7.5% 256.93 US$3,291,804
2026-02-23 2026-02-20
US MKS Inc (MKSI)
S Sale
13,310 -7.2%
256.05
US$3,408,076 		13,310 -7.2% 256.05 US$3,408,076
2026-02-20 2026-02-20
US MKS Inc (MKSI)
PrS Proposed sale
30,000
247.55
US$7,426,500 		30,000 247.55 US$7,426,500