Sorry, I couldn't find pricing data for that day. The closing price for the S&P 500 (GSPC) on June 29, 2018 was $2,718.37. It was down 0.3% for the day. The latest price is $7,591.09.
| DATE | OPEN | HIGH | LOW | CLOSE | VOLUME |
|---|---|---|---|---|---|
June 29 2018 | $2,727.13 | $2,743.26 | $2,718.03 | $2,718.37 | 3,586,800,000 |
Daily pricing data for the S&P 500 dates back to 12/30/1927, and may be incomplete.