Is Lam Research Stock Paying You Enough For The Swings? Trefis Team Thu, November 12, 2026 at 2:54 PM EST 3 min read LRCX -1.92% ^GSPC -0.39% AMAT -4.41% KLAC -2.32% TER -1.32% Explore stocks on Coinbase Trading disclosure Trading disclosure The above button links to Coinbase. Yahoo Finance is not a broker-dealer or investment adviser and does not offer securities or cryptocurrencies for sale or facilitate trading. Coinbase pays us for certain activity generated through this link. Prices displayed are informational.
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Investors who own Lam Research (LRCX), the maker of deposition and etch tools for chipmakers, likely hold the stock alongside capital that already tracks the broader market. Lam's shares have risen and fallen by wide margins in 2026, and these moves land on top of the market's own, changing the overall gains or losses of an entire portfolio. So, over the long run, has Lam earned enough to make up for those swings?
Lam Research Earned A Little Less Per Swing
Lam has earned far more than the market, but not more for each unit of risk it has asked investors to shoulder. Over the five years ended November 11, 2026, Lam returned 33.5% a year including dividends, compared with 11.9% a year for the S&P 500.
The stock also took investors on a much rougher ride. Lam's annual volatility, which measures how far the price typically strays in a year, was 51.2% over those five years, against 17.1% for the index.
Lam's return per unit of volatility, calculated by dividing its yearly return by its volatility, was 0.654 over the same five years, slightly below 0.696 for the S&P 500. This metric shows how much return each unit of swing earned, so holders of the index were paid a little better for every unit of ups and downs.
How Big Are Lam Research's Swings Now?
Over the past year, Lam has moved about three times as far as the market, in both directions. In the year ended November 11, 2026, on the average up day, the S&P 500 rose 0.659%, and a $10,000 holding in Lam gained about $215. On the average down day, the index fell 0.626%, and the same holding lost about $188.
Lam's beta, how far the stock moves for each 1% move in the index, was 3.32 over that year. Its volatility over the same year was 69.1%, against 13.7% for the S&P 500. That is about five times the index's, more than the three times above, because volatility measures how widely daily moves spread, not their plain average on up or down days.
Lam's daily moves also followed the index's direction fairly closely, posting a correlation of 0.66 on a scale where 1 means the two move in lockstep. So Lam adds to the market risk an investor already carries rather than steadying it.
Will Lam Research Stock Keep Swinging Like This?
Lam's sales have moved in large steps from one year to the next, so swings like the past year's are likely to continue. Revenue grew 42.5% in the twelve months ended September 2021 and 14.2% a year later, then fell 12.0% in the twelve months ended September 2023 and 1.5% a year after that. It rose 25.7% in the twelve months ended September 2025. In the twelve months ended September 2026, it grew 33.4%, to $26.1 billion.
The source of those sales is shifting as well. China made up 35% of Lam's revenue in the September 2026 quarter, up from 26% in the June quarter, and management expects China's share to be significantly lower in the December quarter. China's share of revenue is the measure to watch when Lam next reports, expected in January 2027.
If Lam keeps moving the way it has over the past year, the next day the market rises would lift a holding by much more than the index, and the next day it falls would cut it by much more. For investors who already own other chip stocks or a fund built on the spending behind AI chips, Lam adds to that same bet rather than spreading the risk.
What Would Selling Your Lam Research Shares Cost In Tax?
Shares from grants or a purchase plan, held for years, can carry a large taxable gain. A free 30-minute strategy review with our partner advisory firm covers a lower-tax way to sell them down and protect the rest.
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