Comcast (CMCSA) stock split history
Comcast has split its stock 4 times since 1994. The latest was a 2-for-1 split on 21 Feb 2017: each share held before became 2 shares. The close on 17 Feb 2017 was $75.32 and the first close on or after the effective date, 21 Feb 2017, was $37.89 (prices as traded). Below: every split, what it did to the share count, and the chart with splits marked.
All CMCSA stock splits
| Effective date | Split | Close before | First close after | Shares today per 1 held before |
|---|---|---|---|---|
| 21 Feb 2017 | 2-for-1 | $75.32 | $37.89 | 2 |
| 22 Feb 2007 | 3-for-2 | – | – | 3 |
| 6 May 1999 | 2-for-1 | – | – | 6 |
| 3 Feb 1994 | 3-for-2 | – | – | 9 |
Split is new shares for old shares: in a 10-for-1 split one share becomes ten. Close before is the last close before the effective date and first close after is the first close on or after it, both as traded in CMCSA's own history (not adjusted), so the two differ by about the split ratio plus that day's market move. Shares today shows how many shares one share held just before that split has become after it and every later split. Dates and ratios: EODHD. We leave out 1 price adjustment listed for CMCSA that come from spin-offs or special distributions and are not stock splits.
CMCSA price chart with splits marked
The chart shows split-adjusted prices, so the price does not jump on a split date; each split is marked on the date axis. Use the buttons to change the range.
How to read CMCSA's split history
A stock split changes the number of shares and the price per share by the same factor, so the value of a holding stays the same on the day. Comcast's 2-for-1 split on 21 Feb 2017 is the latest in our data: each share held before became 2 shares. Across all 4 splits since 1994, one share held just before the first split has become 9 shares.
A split does not change what a company earns or what it is worth. Per-share figures such as earnings and dividends per share are restated by the ratio, which is why old prices look different in an adjusted chart than in the newspaper of the day. The CMCSA stock page has the current score and fair value range, and the CMCSA price history lists daily prices with both as-traded and adjusted closes.
Recent splits in the same sector: Communication Services
| Company | Latest split | Date |
|---|---|---|
| NFLX Netflix | 10-for-1 | 17 Nov 2025 |
| GOOG Alphabet | 20-for-1 | 18 Jul 2022 |
| TMUS T-Mobile US | 1-for-2 | 1 May 2013 |
| OMC Omnicom Group | 2-for-1 | 26 Jun 2007 |
| TTWO Take Two Interactive Software | 3-for-2 | 12 Apr 2005 |
| DIS Walt Disney | 3-for-1 | 10 Jul 1998 |
| VZ Verizon Communications | 2-for-1 | 30 Jun 1998 |
| T At&T | 2-for-1 | 20 Mar 1998 |
Frequently asked questions
When did Comcast last split its stock?
The last CMCSA stock split in our data took effect on 21 Feb 2017. It was a 2-for-1 split: each share held before became 2 shares. The close on 17 Feb 2017 was $75.32 and the first close on or after the effective date, 21 Feb 2017, was $37.89 (prices as traded).
How many times has Comcast split its stock?
Comcast (CMCSA) has had 4 stock splits since 3 Feb 1994 in our data, which goes back to 1990. Taken together, one share held just before the first split has become 9 shares.
Has Comcast announced a new stock split?
Our data lists no split for CMCSA after 21 Feb 2017 and no announced future one as of 23 Oct 2026. A company announces a split first, usually together with earnings or in a filing, and the split takes effect weeks later. The company's 8-K filings and press releases are the primary source.
What does a 2-for-1 split mean for shareholders?
In a 2-for-1 split the number of shares goes up and the price per share goes down by the same factor: each share held before became 2 shares. The total value of a holding is not changed by the split itself; it only changes with the market price afterwards.
Does a stock split change what a company is worth?
No. A split cuts the same company into more (or fewer) pieces, so market value, earnings and dividends per share are all restated by the ratio. Charts and per-share figures in our data are adjusted for splits so that past and present prices can be compared.
Where does this split data come from?
Split dates and ratios come from EODHD. The closing prices around each split are the as-traded closes in our database. We leave out 1 other event listed for CMCSA because it is a price-adjustment factor for a spin-off or special distribution, not a stock split.
Related
Educational information, not financial advice. Split data to 23 Oct 2026; a company can announce a split at any time.