Is eBay Stock Increasing Your Market Risk?
Shares of eBay (EBAY) climbed 7.2% in the five sessions to October 16, 2026, contrasting with a 1.9% drop in the S&P 500. If the rest of your money already tracks the index, the critical variable is how this marketplace behaves on days the broader market rises and falls. So does adding eBay make the market’s swings in your money bigger?
eBay Adds Less Market Risk, But Wider Swings
No. Over the year ending October 16, 2026, a $10,000 holding in eBay gained about $61 on the average day the S&P 500 rose. That nearly matched the performance of the index itself. On the average day the index fell, that same holding lost about $39, limiting the damage to about two thirds of the index’s fall.
For each 1% the index moved over that year, eBay shifted about 0.72% on average. This muted the broader market’s impact on shareholders. The stock experienced far wider independent movements, however. eBay’s annual volatility, the typical size of its price swings over a year, reached 36.0%, far exceeding the 12.7% volatility recorded for the S&P 500.
The performance gap runs in both directions. In March 2026, the S&P 500 fell 5.1% while eBay stock edged up 0.18%. In August, eBay dropped 9.2% as the index rose 2.6%. The stock can steady a portfolio during a bad month for the market, yet it can also decline on its own during broader rallies.
Swings like this test every retirement plan. If your advisor recently retired, it is a good moment for a free second opinion from our partner firm.
Does eBay’s Business Point To Similar Swings Ahead?
Probably yes. The company is a business in transition. On July 30, 2026, it closed the purchase of Depop for $1.4 billion in cash. Management noted on the fiscal Q2 2026 call that it expects Depop to start adding to non-GAAP operating income in 2028. Management is also opening eBay Live to more sellers. The value of goods sold on eBay Live grew roughly 8x from a year earlier in fiscal Q2 2026.
Daily stock moves at eBay were only loosely linked to the index over the past year. Their correlation was 0.25, a score where 1 means moving in lockstep. With Depop not yet adding to profit and eBay Live still being opened up, independent swings like those seen over the past year are likely to continue.
Have eBay’s Wider Swings Earned More Than The Index?
No. Over the five years to October 16, 2026, eBay stock returned 11.9% a year including dividends, lagging the 13.0% returned by the S&P 500. Its annual volatility over those five years was 32.9%, compared to 17.0% for the index. Consequently, each unit of swing in eBay earned 0.362 points of annual return. The index provided 0.765 points per unit, meaning eBay delivered less than half the market’s pay.
If the pattern of the past year holds, eBay shares will typically rise almost as much as the index during market rallies and fall less than the index during declines. Investors who already own other online marketplaces or resale businesses are making the same kind of bet. In that scenario, the independent price swings at eBay are less likely to offset movements in those similar stocks. For the stock’s extra volatility to be worth taking, the new businesses eBay is building will have to lift what its shareholders earn per unit of swing closer to what the index pays.
Your Advisor Retired? Get A Second Opinion Before You Settle
A single stock like eBay can make a portfolio’s good and bad days bigger. When the advisor who built your plan moves on, it is a natural moment to ask whether the plan still fits the life you have now. Glenn Caldicott, CIO of our Boston-based partner firm Empirical Asset Management, an SEC-registered investment adviser, offers a free review of your holdings, fees and income plan.