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how is Daily Gross Short Sales reported by the asx in shortsell.txt calculated

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The Australian Securities Exchange (ASX) publishes a file called "shortsell.txt" on a daily basis, which includes the total number of securities that have been sold short for each ASX-listed company. The Daily Gross Short Sales reported by ASX in this file are calculated as follows:

1. The ASX collects data from its participating market participants (brokers and other financial institutions) on the number of short positions held for each ASX-listed company.
2. The ASX aggregates this data and calculates the total number of short positions held for each ASX-listed company.
3. The ASX then reports this data in the "shortsell.txt" file as the Daily Gross Short Sales, which represents the total number of short positions held for each ASX-listed company at the end of the trading day.

It's important to note that the Daily Gross Short Sales reported by ASX in the "shortsell.txt" file represent the total number of short positions held for each ASX-listed company, not the total number of shares sold short. This is because short sellers can sell the same shares multiple times to different buyers, which would result in a higher number of short positions than actual shares sold short.

Daily Gross Short Sales reported for 08-May-2023, ASX Limited (ASX) & Chi-X Australia (CHI-X)

BRN     BRAINCHIP HOLDINGS LTD            FPO                  898,926       1,767,058,145         .05