What happens to a stock when it joins the S&P 500?

S&P 500 inclusion creates forced, price-insensitive buying. Over $7 trillion in assets — including index funds like Vanguard's VOO and ETFs like SPY — are benchmarked to the S&P 500 and must hold every constituent at its correct weight. When Reddit is added, every one of these funds must purchase RDDT shares before the effective date, regardless of price. Historical data shows S&P 500 additions average +8% in the week following the announcement. RDDT's 19% surge reflects both the passive buying mandate AND the market's enthusiasm for Reddit's AI data licensing revenue stream (Reddit licenses user-generated content to AI companies including OpenAI and Google).

Why did Applied Materials drop 5% after reporting 41% EPS growth?

AMAT's post-earnings drop is a classic 'beat already priced in' scenario. Before earnings, the stock had rallied significantly on semiconductor recovery optimism. When a stock runs up sharply into a print, it prices in a beat — and then requires an even larger beat, or strongly bullish forward guidance, to sustain that premium. AMAT's 41% EPS growth was real, but it was already embedded in the share price. The simultaneous price target upgrades on Micron and SanDisk suggest the sector itself remains healthy — just that AMAT was expensive heading into the print.

What is Steve Eisman's argument for a market crash in 2026?

Eisman's crash thesis mirrors Burry's concerns about circular funding structures — AI companies that fund each other's valuations through inter-related investments, creating a chain of inflated marks without external cash validation. He also points to valuations stretched across the board: the S&P 500 at 27 all-time highs in a single year, software multiples expanding despite slowing revenue growth, and AI infrastructure spending that has not yet produced proportional monetization. His concern is not that AI is fake — it's that the market has priced in the full value of AI's potential before that potential has been demonstrated in earnings.

Reddit Joins the S&P 500, Workday Jumps 26%: Market Record #27 Flashes a Split Screen

By Yogurt · 2026-08-14 · Market Analysis

Reddit (RDDT) is being added to the S&P 500, replacing AvalonBay Communities (AVB) — sending the stock up 19% on forced passive buying. The market printed its 27th all-time high of 2026, but only 2 of 4 major indices closed at records (S&P 500 + Russell 2000; Nasdaq + Dow lagged). Workday surged 26% on PE buyout rumors, Applied Materials dropped 5% despite 41% EPS growth, and Steve Eisman joined Michael Burry in calling a crash.

The number is 27. That is how many all-time highs the S&P 500 has printed in 2026 — a pace that rivals the most euphoric years in post-war market history. Thursday added record #27, and it arrived with a marquee catalyst: Reddit is joining the S&P 500.

The announcement landed around 5 PM Eastern on August 13. Reddit (ticker: RDDT) will replace AvalonBay Communities (AVB) — a real estate investment trust — in the benchmark index. The stock surged 19% in after-hours trading as the market priced in the inevitable: $7+ trillion in S&P 500-tracking assets will be required to buy RDDT before the effective date, regardless of price.

How S&P 500 Inclusion Works — and Why 19% Is Actually Reasonable

When a stock joins the S&P 500, every passive index fund and ETF benchmarked to the index must purchase shares to match the index weighting. This creates forced, price-insensitive buying at scale. Historical analysis shows S&P 500 additions average approximately +8% in the week following announcement. RDDT's 19% jump is above the historical average — suggesting the market is pricing in both the passive inflows AND a re-rating of Reddit's business fundamentals.

Reddit's case for a premium re-rating is specific: the company has been licensing its vast trove of user-generated content to AI companies — including OpenAI and Google — for training large language models. That data licensing revenue is growing rapidly and provides a recurring income stream that is independent of advertising cycles. S&P 500 inclusion forces institutional investors who have been sitting on the sidelines to now study Reddit's AI data business — and many of them may conclude it is undervalued at current prices.

Record #27 — But Only 2 of 4 Indices Agree

Here is where the victory lap gets complicated. While the S&P 500 and the Russell 2000 closed at all-time highs, the Nasdaq Composite and the Dow Jones Industrial Average did NOT reach new records on the same session.

That is a divergence that experienced market analysts treat as a yellow flag. In healthy bull markets, all major indices tend to confirm each other's moves — strength is broad, not concentrated. When the S&P 500 makes a new high while the Nasdaq — which has heavy tech and AI weighting — lags behind, it suggests the record is being driven by index composition and mechanical flows (like the RDDT inclusion effect) rather than broad-based buying conviction.

The equal-weight S&P 500 (RSP) rose 0.75% on Thursday — a healthy signal that smaller, non-mega-cap stocks are participating. Communication Services led for the second consecutive session. Software rose 3.1%. But Materials and some defensive sectors lagged. The picture is not euphoria — it is selective strength with visible gaps.

IGV Software ETF: The 4th Test of the 110 Ceiling

The iShares Expanded Tech-Software Sector ETF (IGV) closed at $106 after a 3.1% session, rallying on strong volume. But this brings IGV to the doorstep of its most significant multi-year resistance zone.

The $110 level has rejected IGV four times in two years:

December 10, 2024 — Reversed at $107
February 19, 2025 — Reversed at $110
December 11, 2025 — Reversed at $108
June 1, 2026 — Reversed at $106

Each of these reversals came with strong momentum going in — and each was followed by meaningful drawdowns. Now IGV is at $106 again, with elevated volume and a strong recent trend. The bull case: four tests of resistance that hold ultimately break on the fifth, especially when broader market conditions are supportive and software earnings are recovering. The bear case: the pattern is sticky, and another rejection here could be violent precisely because positioning is long and complacent.

Workday Surges 26% on Private Equity Take-Private Reports

Buried beneath the Reddit headlines was one of Thursday's most dramatic price moves: Workday (WDAY) surged as much as 26% intraday before settling to approximately +17% at close, on reports that a major private equity firm is exploring a deal to take the enterprise HR and financial software company private.

If completed, this would represent one of the largest technology take-private transactions in years. Workday's market cap — even before Thursday's surge — made it one of the largest software companies in the world. PE firms rarely pursue deals at this scale, which either means the valuation gap is extraordinary, or the reported interest is preliminary enough that headline risk remains high.

The technical setup was already interesting before the news: Workday had been forming a rising-lows pattern over several months, and analysts noted the stock was pressing against a key descending resistance line. The buyout news triggered a breakout precisely at that resistance — a technical confirmation that often signals a real directional change, even if the specific catalyst is uncertain.

For existing WDAY shareholders, the calculus is now complex: do you take profit after a 17–26% day, or hold for a potential buyout premium that could be significantly higher?

Applied Materials: The 41% Beat That Disappointed

Applied Materials (AMAT) — the world's largest semiconductor equipment company — reported after Thursday's close. The headline numbers were strong: EPS significantly above consensus, with net income growing approximately 41% year-over-year. Revenue held up. Margins were solid.

The stock fell 5% in after-hours trading.

This is one of earnings season's most reliable patterns: a stock that has rallied sharply into a report, pricing in an excellent quarter, then fails to surprise on the upside sufficiently to justify that pre-earnings premium. AMAT had run on the back of the broader semiconductor recovery narrative. The 41% EPS growth was real — it just wasn't more than the market had already paid for.

The forward read is nuanced. Both Micron and SanDisk received analyst price target upgrades the same day — a signal that analysts covering the sector see the equipment cycle as healthy. AMAT's dip may be a buying opportunity for investors who believe semiconductor capex is still in an early upcycle. Or it may be the first sign that the AI infrastructure trade is getting crowded and expectations are simply too high.

Macro: PPI Cools, Jobless Claims Rise, Fed Hike Odds Drop to 35%

Thursday's economic data was mixed — but the market interpreted it as constructive for a continued Fed hold:

PPI (Producer Price Index) came in below expectations. Producer-level inflation is cooling faster than forecast. Since what businesses pay for inputs today shows up in consumer prices 3–6 months later, a below-expectations PPI is a leading indicator that consumer inflation (CPI) will continue to moderate in the autumn.

Jobless claims came in at 209,000 — modestly above the 202,000 consensus. More Americans are filing for unemployment benefits than expected. This sounds negative but functions as a dove signal: a labor market that is gradually softening gives the Fed less reason to raise rates, and more reason to consider cuts.

The combined reading — cooling inflation AND rising jobless claims — is the perfect backdrop for a Fed hold. The CME FedWatch Tool now shows September rate hike probability at approximately 35%, down from 50% earlier this week. Rate cut probabilities for late 2026 are creeping back onto the table for the first time in months.

Steve Eisman Joins the Bear Camp: "The Big Short" Alumni Are Aligned

The market's 27th all-time high of 2026 is the backdrop against which two of Wall Street's most famous contrarians have now publicly aligned.

Steve Eisman — the Frontpoint Partners manager immortalized in Michael Lewis's "The Big Short" for his prescient mortgage-crisis shorts — announced this week that he expects a significant market correction. His argument echoes Michael Burry's: circular funding structures among AI companies, where valuations are supported by inter-related investments rather than external cash validation; and market multiples that have priced in the full promise of AI without yet seeing the revenue reality.

Burry, who had already disclosed shorts in NBIS, Oracle, and semiconductor ETFs, has been doubling down on his thesis even as the market prints new records. The 27th ATH is not dissuading him — if anything, his framework suggests that the higher the market goes without fundamental justification, the more dramatic the eventual adjustment.

The honest caveat: both Eisman and Burry have been early and wrong before. Burry was net short through significant portions of the 2023–2024 bull market and missed enormous gains. Being correct on direction is not the same as being correct on timing. What is notable now is their simultaneous convergence — two independent, fundamentals-driven analysts reaching the same conclusion at the same moment in the cycle.

NBIS: The Data Center Hit With a Stop-Work Order

On August 10, NeuralBase (NBIS) received a regulatory stop-work order from Vineland, New Jersey, halting construction of a planned AI data center. The order reportedly involves concerns related to Bloom Energy (BE), which was involved in the facility's power supply infrastructure.

NBIS management told investors that everything is "on track" — a statement that, if accurate, suggests the stop-work order is procedural rather than terminal. But the optics are complicated: a regulatory halt, a down-1.6% session with an unfavorable candlestick pattern, and Bloom Energy printing a "doji" at a major resistance level left both stocks in uncertain technical territory heading into Friday.

For the AI data center buildout narrative broadly, the NBIS situation is a real-world reminder that energy infrastructure constraints are material, regulatory approvals are not automatic, and the gap between an announced data center and an operating one is measured in years, not months.

The Bottom Line: Record #27, and Reasons to Watch Both Ways

Record #27 of 2026 is a real milestone. The breadth signal from the RSP's 0.75% gain is genuinely positive. Reddit's S&P 500 inclusion and Workday's PE interest are company-specific catalysts with fundamental legs. Cooling PPI and easing rate hike odds are macro tailwinds.

But the divergence — two of four major indices not at highs, IGV at its fourth test of a multi-year ceiling, two "Big Short" veterans aligning on crash risk, NBIS facing regulatory friction, AMAT selling the news after 41% EPS growth — is a pattern worth watching.

The next key data points: whether IGV clears $110 early next week, how the semiconductor sector digests AMAT's call, and whether Workday's PE story gets official confirmation or denial over the weekend. Each of those three will say something about whether record #27 is a launchpad or a local top.

The market's mood heading into the weekend: cautiously triumphant. The bears are louder. The bulls are still winning. For now.