Stock Split History
Costco Wholesale stock split history picture
Costco Wholesale (COST) has 2 splits in our Costco Wholesale stock split history database. The first split for COST took place on October 22, 1993. This was a 2 for 1 split, meaning for each share of COST owned pre-split, the shareholder now owned 2 shares. For example, a 1000 share position pre-split, became a 2000 share position following the split. COST's second split took place on January 14, 2000. This was a 2 for 1 split, meaning for each share of COST owned pre-split, the shareholder now owned 2 shares. For example, a 2000 share position pre-split, became a 4000 share position following the split.

When a company such as Costco Wholesale splits its shares, the market capitalization before and after the split takes place remains stable, meaning the shareholder now owns more shares but each are valued at a lower price per share. Often, however, a lower priced stock on a per-share basis can attract a wider range of buyers. If that increased demand causes the share price to appreciate, then the total market capitalization rises post-split. This does not always happen, however, often depending on the underlying fundamentals of the business.

Looking at the Costco Wholesale stock split history from start to finish, an original position size of 1000 shares would have turned into 4000 today. Below, we examine the compound annual growth rate — CAGR for short — of an investment into Costco Wholesale shares, starting with a $10,000 purchase of COST, presented on a split-history-adjusted basis factoring in the complete Costco Wholesale stock split history. Costco Wholesale split adjusted history picture

Growth of $10,000.00
With Dividends Reinvested

Start date: 04/09/2010
End date: 04/08/2020
Start price/share: $61.21
End price/share: $305.97
Starting shares: 163.37
Ending shares: 210.35
Dividends reinvested/share: $34.82
Total return: 543.62%
Average Annual Total Return: 20.45%
Starting investment: $10,000.00
Ending investment: $64,344.41
Years: 10.01
 
Growth of $10,000.00
Without Dividends Reinvested

Start date: 04/09/2010
End date: 04/08/2020
Start price/share: $61.21
End price/share: $305.97
Dividends collected/share: $34.82
Total return: 456.76%
Average Annual Total Return: 18.72%
Starting investment: $10,000.00
Ending investment: $55,673.33
Years: 10.01
Costco Wholesale and its subsidiaries are principally engaged in the operation of membership warehouses based on the concept of providing its members low prices on a selection of nationally branded and private-label products. Co.'s merchandise are: food and sundries, which include dry foods, packaged foods, and groceries, snack foods, candy, alcoholic and nonalcoholic beverages, and cleaning supplies; hardlines, which include appliances, electronics, health and beauty aids, hardware, and garden and patio; fresh food, which include meat, produce, deli, and bakery; softlines, which include apparel and small appliances; and ancillary, which include gas stations and pharmacy businesses. According to our Costco Wholesale stock split history records, Costco Wholesale has had 2 splits.
Date Ratio
10/22/19932 for 1
01/14/20002 for 1
COST is categorized under the Services sector; below are some other companies in the same sector that also have a history of stock splits:

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CWH Split History
CWTR Split History
DDE Split History
DDS Split History

Also explore: COST shares outstanding history

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