The S&P 500 surged nearly 15% in the second quarter of 2026, one of the strongest Q2 showings since 1950. Carson Group data shows that when the index climbs more than 10% in a second quarter, the final six months have finished higher eight times out of nine and averaged an 11.7% gain.
After a sluggish start to the year, the S&P 500 rebounded almost 15% in the second quarter, a move that ranks among the strongest Q2 performances since 1950. Such a rare surge has historically been followed by further gains rather than exhaustion, which is why the setup is drawing attention.
What history says after a strong Q2
Ryan Detrick, chief market strategist at Carson Group, tracks every case back to 1950, and the nine prior instances point in one direction. Years in which the S&P 500 gained more than 10% in the second quarter have almost always closed the remainder of the year higher.
The S&P 500 index history backs the pattern. The final six months finished higher eight times out of nine, an 88.9% hit rate, averaging a gain of 11.7%.
According to Benzinga, Detrick said Monday on X: “Momentum is real,” counting 41 instances since 1950 in which the index gained more than 10% in a single quarter. In those cases the median return over the following 12 months reached 13.4%.
Why a strong quarter tends to persist
A double-digit quarter reads to some as borrowed performance, yet the data argues the opposite. A move that large reflects broad participation and improving earnings expectations, and such momentum tends to feed on itself.
The contrast with a typical year sharpens the case. Across all years since 1950, the final six months averaged just 4.9% and closed higher only 72.4% of the time. The largest follow-throughs came out of the deepest fear: the 15.2% second quarter of 2009 was trailed by a 21.3% gain into year-end.
Can history repeat?
Historical performance does not guarantee future results, and markets still face the Federal Reserve’s policy path, inflation dynamics, corporate earnings, fiscal policy, and geopolitical risks. Still, if 2026 follows the playbook, investors could see another double-digit advance before year-end.
Source: Benzinga
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