Equal-Weight S&P 500 Outperforms Cap-Weighted Index as Market Rally Broadens
Miles Bennett
The S&P 500 equal-weight index is up 14.8% in 2026, leading its cap-weighted counterpart by about 1.3 percentage points — a sign that the US equity rally is spreading beyond a handful of mega-cap tech names into a wider pool of constituents.
What does the equal-weight lead actually tell us?
Invesco's equal-weight ETF (RSP) has gained 14.8% year-to-date; State Street's cap-weighted ETF (SPY) has gained 13.5% — a gap of roughly 1.3 percentage points.
This means → the rally is no longer driven by a few mega-cap tech stocks alone; more mid-weight constituents are rising in tandem.
In plain terms = instead of a handful of giants carrying the index, a broader crowd is lifting it together — typically seen as a healthier bull-market structure.
Which stocks are leading the charge in 2026?
Storage and semiconductors dominate the top of the leaderboard: SanDisk (SNDK) up 425.7%, Dell (DELL) up 272.7%, Micron (MU) up 206.2%, Seagate (STX) up 194.1%, Intel (INTC) up 165.1%.
The second tier is also chip- and storage-heavy: Western Digital (WDC), Marvell (MRVL), HPE, Lumentum (LITE), and AMD have each gained over 120%.
This reflects an accelerating re-pricing of AI infrastructure — especially storage and compute hardware — with capital flowing well beyond Nvidia alone.
Who are the surprise names on the leaderboard?
Cybersecurity firms Fortinet (FTNT) and Palo Alto Networks (PANW), plus CrowdStrike (CRWD), have all cracked the top 20, with Fortinet and Applied Materials (AMAT) each topping 107%.
Energy refiners Marathon Petroleum (MPC) and Valero (VLO), along with optical-materials maker Corning (GLW), also made the list, gaining 86.8%–105.4%.
This means → the rally stretches across cybersecurity, energy refining, and optical materials — not just semiconductors — and that breadth is what the equal-weight outperformance is capturing.
Can this broadening last?
The key test arrives in coming earnings seasons: whether these mid-weight stocks can deliver profit growth that justifies their share-price surges.
In plain terms = prices have run ahead; profits have not caught up yet. If the next round of earnings confirms that profits are rising too, the broadening can hold — otherwise, it is an overshoot waiting to correct.
This reflects a market in a "confidence first, earnings second" phase — for investors, the earnings data matters more right now than the index level itself.
Content is for reference only, not financial advice.