All three TSP stock funds fell in March 2026, with the C Fund down 4.98%, the S Fund down 4.58% and the I Fund down 9.35%. The C and S funds are now negative year-to-date, while the I Fund remains up 1.84%.
Losses were attributed to the war in Iran, with a late-March rally tied to hopes of a coalition to reopen the Strait of Hormuz.
These are federal retirement fund returns with little direct effect on feed commodity prices. Their relevance is as a sign of broader market stress tied to the Hormuz-related energy shock.
Not enough comparable past events yet for a historical read.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.