On June 30, 2020, the common stock of Altus Midstream Co (ALTM), a component of the CRSP US Total Market, US Micro Cap and US Energy indexes, effected a 1-20 reverse stock split following the close of business. CRSP did not apply this reverse split.

To correct this, CRSP reduced holdings for ALTM by a factor of 20. Since the impact of this omission has a compounding effect on the US Micro Cap and US Energy indexes in excess of the actionable basis point thresholds, CRSP restated all days beginning July 1, 2020 with the reverse split applied and replacement files were made available.

CRSP’s restatement policy can be found in Appendix I: CRSP Market Indexes Restatement Policy of the CRSP Market Indexes Methodology Guide.

For any related inquiry, please respond to indexes@crsp.org.