Stock market today · Monday recap
Stock market today: Monday, October 19, 2026
On Monday, October 19, 2026, the S&P 500 ETF (SPY) rose 0.42% to $766.48, with the Nasdaq 100 (QQQ) +1.21%, the Russell 2000 (IWM) +0.31%, according to Senntric data. The biggest move among tracked large caps was Western Digital Corporation (WDC), up 6.1% to $352.21.
By Konsta · Senntric data, 4:00 pm ET close · Updated
Index price movement
S&P 500, Nasdaq and Dow on October 19, 2026.
- ▲ +0.42%
S&P 500
SPY ETF
$766.48
Prior close $763.25 · Fri, Oct 16
Last 15 sessions
- ▲ +1.21%
Nasdaq 100
QQQ ETF
$718.36
Prior close $709.80 · Fri, Oct 16
Last 15 sessions
- ▲ +0.31%
Russell 2000
IWM ETF
$271.28
Prior close $270.44 · Fri, Oct 16
Last 15 sessions
Regular-session closes from Senntric’s stored daily bars; change is against the previous session’s close. ETFs track their index, not its exact level.
Fed, BLS, BEA, Treasury
Economic data on October 19, 2026.
High-impact US releases, actual against expected, with the agency that published each one. Times are US Eastern.
No high-impact US release on October 19, 2026.
Senntric’s economic calendar recorded no high-impact release from the Federal Reserve, BLS, BEA or Treasury with an actual for this session.
Stock news October 19, 2026
The biggest stock moves on Monday.
The largest close-to-close moves among the S&P 500 and the large caps Senntric tracks.
WDC, October 19, 2026: up 6.1% to $352.21
Western Digital Corporation closed at $352.21, from $332.00 on Fri, Oct 16.
▲ +6.1%
SNDK, October 19, 2026: up 5.5% to $1,371.12
Sandisk Corporation closed at $1,371.12, from $1,299.30 on Fri, Oct 16.
▲ +5.5%DDOG, October 19, 2026: up 5.4% to $260.36
Datadog Inc. closed at $260.36, from $247.11 on Fri, Oct 16.
▲ +5.4%TWLO, October 19, 2026: up 5.3% to $257.29
Twilio Inc. closed at $257.29, from $244.37 on Fri, Oct 16.
▲ +5.3%
AMZN, October 19, 2026: up 5.0% to $262.45
Amazon.com Inc. closed at $262.45, from $250.00 on Fri, Oct 16.
▲ +5.0%MOS, October 19, 2026: down 4.8% to $17.92
Mosaic Company closed at $17.92, from $18.82 on Fri, Oct 16.
▼ −4.8%
Senntric’s read, October 19, 2026
A broad up day: Nasdaq 100 +1.2% led and Russell 2000 +0.3% lagged; WDC’s +6.1% was the move that stood out.
Stock market October 19, 2026
Questions about Monday’s market
How did the stock market do on October 19, 2026?
On Monday, October 19, 2026, the S&P 500 ETF (SPY) rose 0.42% to $766.48, with the Nasdaq 100 (QQQ) +1.21%, the Russell 2000 (IWM) +0.31%, according to Senntric data. The biggest move among tracked large caps was Western Digital Corporation (WDC), up 6.1% to $352.21.
Why did the stock market go up on October 19, 2026?
A broad up day: Nasdaq 100 +1.2% led and Russell 2000 +0.3% lagged; WDC’s +6.1% was the move that stood out. No high-impact US economic release was recorded that day. The largest moves among tracked large caps were WDC +6.1%, SNDK +5.5%, DDOG +5.4%.
What did the S&P 500 close at on October 19, 2026?
SPY, the S&P 500 ETF, closed at $766.48 on October 19, 2026, up 0.42% from $763.25 on October 16, 2026, according to Senntric data.
What economic data was released on October 19, 2026?
No high-impact US release from the Federal Reserve, BLS, BEA or Treasury was recorded for October 19, 2026.
Which stocks moved the most on October 19, 2026?
Western Digital Corporation (WDC) +6.1% to $352.21; Sandisk Corporation (SNDK) +5.5% to $1,371.12; Datadog Inc. (DDOG) +5.4% to $260.36; Twilio Inc. (TWLO) +5.3% to $257.29; Amazon.com Inc. (AMZN) +5.0% to $262.45; Mosaic Company (MOS) −4.8% to $17.92. Moves are close to close among the S&P 500 and the large caps Senntric tracks.
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About this data: closes are Senntric’s stored regular-session daily bars; releases are high-impact US events from Senntric’s economic calendar, with the publishing agency linked; alerts come from Senntric’s Situation Awareness Engine. Figures that weren’t stored are left out. Educational content, not investment advice. More: Markets.