The week in markets: S&P 500 Informationstechnologie weighs on the week (-3.5%) · August 17–21, 2026

The trading week of August 17–21, 2026 in review: 72 of 93 tracked assets (77 %) finished the week higher, with the major equity indices moving -0.8 % on average over the week. This part focuses on equities and benchmark indices; crypto, commodities and FX follow on Sunday.
Weekly barometer
Weekly change = weekend close versus roughly five trading days earlier.
Indices over the week
Stocks: weekly gainers & losers
Gainers
| Name | Price | Change |
|---|---|---|
| MODERNA INC MRNA | $145.13 | +129.20 % |
| STRATEGY INC CLASS A MSTR | $119.25 | +28.17 % |
| COINBASE GLOBAL INC CLASS A COIN | $186.49 | +25.61 % |
| CIRCLE INTERNET GROUP CLASS A CRCL | $87.98 | +22.88 % |
| ESSILORLUXOTTICA SA EL | $101.94 | +18.40 % |
| FREEPORT MCMORAN INC FCX | $76.66 | +15.30 % |
| ILLUMINA INC ILMN | $219.4 | +14.94 % |
| CNH INDUSTRIAL N.V. CNH | $11.87 | +13.70 % |
Losers
| Name | Price | Change |
|---|---|---|
| FABRINET FN | $436.67 | -23.42 % |
| COREWEAVE CLASS A CRWV | $87.85 | -16.54 % |
| REDDIT CLASS A RDDT | $153.29 | -13.93 % |
| JABIL JBL | $313.21 | -13.74 % |
| SEAGATE TECHNOLOGY HOLDINGS PLC STX | $850 | -12.68 % |
| FLEX LTD FLEX | $110.45 | -12.45 % |
| BLOOM ENERGY CLASS A BE | $201.45 | -12.39 % |
| INTEL CORPORATION INTC | $90.07 | -12.13 % |
From the US stocks Alysly charts. Weekly swings in single names can be far larger than those of the indices.




