Friday's Top Stock Performers: Reddit (RDDT), Applied Materials (AMAT), and Nu Holdings (NU) in Focus
Reddit (RDDT) confirmed it will join the S&P 500 on Aug. 18, replacing AvalonBay Communities, after which RDDT rose about 12%. Applied Materials (AMAT) fell ~5% despite Q3 revenue of $9.12B and EPS $3.50. Nu Holdings (NU) gained ~9% on $5.88B revenue (+56% YoY).
How this was made

The 30-second read
Why it matters
RDDT faces a mechanical passive-buy catalyst into Aug. 18. AMAT and GLOB show that earnings beats can still lead to selling when guidance or balance-sheet items disappoint. NU’s rally is supported by multiple growth and profitability beats.
Market read
This is a catalyst-driven trading brief: one index-mechanics event (RDDT) plus same-day earnings and guidance reactions (AMAT, NU, GLOB).
What to watch
AMAT’s $220M unrealized investment loss could be non-cash and may reverse, while GLOB’s guidance range implies a narrow growth band that could be sensitive to contract timing and FX assumptions.
Background
The piece is a Friday market wrap highlighting top movers tied to S&P 500 index changes, earnings/guidance prints, and analyst actions.
Ticker impact
Reddit confirmed it will enter the S&P 500 on Aug. 18, replacing AvalonBay, which typically triggers passive index-buying flows.
Near-term bid into Aug. 18, with potential post-inclusion fade if expectations were already priced.
The article cites a specific Aug. 18 effective date and describes the usual passive-fund buying mechanism, but provides no valuation or incremental guidance beyond the index change.
Applied Materials reported Q3 results and raised guidance, yet shares fell about 5% on profit-taking and a $220M unrealized investment loss.
Choppy to slightly negative near term as profit-taking and investment losses may cap upside despite guidance strength.
The article includes both the positive fundamentals (revenue, EPS, guidance) and the negative overhang (unrealized loss) plus the magnitude of the immediate move.
Nu Holdings rallied about 9% after Q2 revenue grew 56% YoY and GAAP EPS beat estimates, alongside strong net interest income growth.
Bullish near term, with follow-through risk if the market shifts focus from growth to valuation or sustainability.
The article provides multiple concrete upside datapoints (revenue, EPS, net interest income, customer adds) aligned with the reported price jump.
Globant dropped about 13% after missing earnings expectations and cutting its full-year 2026 revenue outlook range.
Downward bias near term, with potential volatility around further demand commentary.
The article directly links the 13% decline to both an earnings miss and a reduced revenue outlook range.
Market effects
Semiconductor equipment (AMAT) and AI-demand commentary may influence sentiment across the AI capex chain, while fintech growth (NU) reinforces risk-on appetite for digital banks.
Brazil-focused fintech strength (NU) may attract incremental EM fintech flows, while US index mechanics (RDDT) are domestically driven.
Tariff headlines on drone imports and broader inflation digestion are mentioned, but the article’s actionable content is primarily US company-specific.
Counterpoint
RDDT’s index inclusion may already be priced; if passive flows are the main driver, upside could fade after Aug. 18.
Key entities
- US-listed equityReddit, Inc.
Confirmed S&P 500 inclusion effective Aug. 18, replacing AvalonBay Communities.
- US-listed equityApplied Materials
Reported Q3 results and raised guidance, but shares fell about 5% amid profit-taking and a $220M unrealized investment loss.
- US-listed equityNu Holdings
Reported Q2 results with 56% YoY revenue growth and GAAP EPS beat, sending shares up about 9%.
- US-listed equityGlobant
Missed earnings expectations and reduced full-year 2026 revenue outlook, with shares down about 13%.





