Stats › Cotations, IPO et opérations sur titres › Buyback blackouts
Buyback blackout windows cut repurchase flow by 43% and move prices by nothing
Monthly share repurchase intensity as a percentage of shares outstanding, US firm panel 2004 to 2019. The flow effect is large and well identified. The return effect, measured separately on an index of the 100 heaviest S&P 500 repurchasers over 1994 to 2018, is not statistically significant in any window tested.
Firms repurchase 0.167% of shares in months with no blackout days against 0.095% in fully covered months, a 43% reduction in flow. On an index of the heaviest S&P 500 buyback names the return effect is statistically indistinguishable from zero.
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