- PLTR +29.45% was the single biggest move across all cap tiers — led the large-cap tier.
- Two-way tape — 4 cap tiers had an up-mover and 4 had a down-mover.
- Spread between the biggest up and biggest down move was 45.1 percentage points — wide dispersion.
These are the biggest stock movers from Tuesday’s US session (August 4, 2026) — one up and one down for each market-cap tier. PLTR +29.45% led overall in the large-cap bucket. Each ticker block has the catalyst (or an honest “no clear catalyst” if there isn’t one) plus what a pattern-recognition algorithm would actually flag in the move — base breakout, momentum continuation, failed breakdown, sympathy selloff, or noise.
Mega-cap movers (Companies above $200B)
↑ AMD +7.00%
$518.58 · Mega-cap · $19.3B traded
Why: Chipmakers rallied broadly as AI infrastructure spending expectations lifted the sector heading into AMD’s after-bell earnings report, with tech leading the August open.
Pattern: Clean momentum continuation on massive $19B dollar volume — AMD has been building higher lows since June and this move extends the trend without signs of exhaustion.
↓ AMZN -2.32%
$277.42 · Mega-cap · $18.2B traded
Why: No company-specific catalyst — AMZN gave back gains on a risk-rotation day where money moved from mega-cap consumer tech into AI infrastructure and software names.
Pattern: Modest pullback within a broader consolidation range — the 2.3% drop on average volume looks like normal rotation noise rather than a trend break.
Large-cap movers ($10B to $200B)
↑ PLTR +29.45%
$162.66 · Large-cap · $28.0B traded
Why: Palantir surged nearly 30% after Q2 earnings blew past estimates, with management highlighting accelerating AI platform adoption across government and commercial customers.
Pattern: Massive gap-up on $28B dollar volume dwarfing any recent session — this is a post-earnings momentum event, not a technical pattern; chase risk is elevated at these levels.
↓ NKE -2.60%
$41.53 · Large-cap · $1.0B traded
Why: Nike slid after an analyst downgrade to Sell citing skepticism that the company’s ‘Win Now’ turnaround strategy can reverse declining brand momentum fast enough.
Pattern: Continuation of a persistent downtrend — NKE has been making lower highs for months and this drop keeps the stock pinned near 52-week lows with no base forming.
Mid-cap movers ($2B to $10B)
↑ PATH +8.05%
$14.10 · Mid-cap · $818M traded
Why: UiPath caught a sympathy bid from Palantir’s blowout AI-driven earnings, lifting the broader enterprise automation and AI-adjacent software group in the session.
Pattern: Bounce off a low base on elevated volume — PATH has been range-bound near multi-year lows, and this pop needs follow-through to avoid fading back into the range.
↓ AMC -5.96%
$2.68 · Mid-cap · $108M traded
Why: No clear single-session catalyst — AMC drifted lower on light $108M dollar volume as the broader meme-stock and legacy entertainment complex saw selling pressure.
Pattern: Low-volume drift lower within a well-established downtrend — the thin dollar volume suggests this is noise rather than a capitulation event worth reading into.
Small-cap movers ($300M to $2B)
↑ ASTS +10.69%
$70.31 · Small-cap · $1.3B traded
Why: AST SpaceMobile rallied alongside the broader space and satellite group, with investor interest building ahead of its upcoming Q2 earnings report and satellite deployment milestones.
Pattern: Strong momentum continuation on $1.3B dollar volume — ASTS has been trending higher with a series of higher lows, and this session extends the run without a gap to fill.
↓ CIFR -15.65%
$20.38 · Small-cap · $1.2B traded
Why: Cipher Mining dropped sharply following its Q2 earnings report, with the results apparently disappointing investors despite KBW maintaining an Outperform rating with upside target.
Pattern: Post-earnings breakdown on heavy $1.2B volume — the 15% single-day drop slices through recent support and resets the chart to a lower range that needs time to rebuild.
Today’s biggest stock movers — bottom line
Tuesday’s tape was mixed — even split between up- and down-movers across the cap tiers. The Movers recap drops daily Tue-Sat morning Melbourne time, covering the prior US session’s biggest stock movers in every cap tier — mega, large, mid, and small.
Read next: Daily Stock Movers · Gamma Squeeze Mechanics · What Is a P/E Ratio?
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