The closing price for Bitcoin (BTC) on October 19, 2023 was $28,696.36. It was up 1.3% for the day.

The closing price for Amazon (AMZN) on Friday was $187.83. It was down 0.3% for the day.

Sarepta Therapeutics (SRPT) had the highest return between May 1, 2012 and July 31, 2012 by a large-cap US stock, returning 82.1%.

Marathon Digital (MARA) had the highest return between May 1, 2012 and July 31, 2012 by a mid-cap US stock, returning 875,233.3%.

Clearpoint Neuro (CLPT) had the highest return between May 1, 2012 and July 31, 2012 by a US stock, returning 13,233.3%.

The closing price for McDonald’s (MCD) in 2006 was $26.97, on December 29, 2006. It was up 32.4% for the year. The latest price is $292.61.

Summit Therapeutics (SMMT) has had the highest return since April 30, 2022 by a large-cap US stock, returning 1,245.6%.

Align Technology (ALGN) had the lowest return between October 8, 2007 and November 20, 2007 by a large-cap US stock, returning -43.8%.

The closing price for NVIDIA (NVDA) in September 2001 was $0.21, on September 28, 2001. It was down 34.9% for the month. The latest price is $141.54.

The closing price for NVIDIA (NVDA) in September 2008 was $0.25, on September 30, 2008. It was down 16.7% for the month. The latest price is $141.54.

T-Mobile US (TMUS) had the lowest return between October 8, 2007 and November 20, 2007 by a mega-cap US stock, returning -34.7%.

T-Mobile US (TMUS) had the lowest return between October 5, 2007 and November 23, 2007 by a mega-cap US stock, returning -43%.

Protalix Biotherapeutics (PLX) had the lowest return between October 5, 2007 and November 23, 2007 by a US stock, returning -87.7%.

Sorry, I don't have the answer to that one.

Intuitive Surgical (ISRG) had the highest return in July 2005 by a large-cap US stock, returning 48.5%.