At the height of the cannabis stock frenzy back in March/April of 2019, there were 17 companies out of a total of 319 companies listed on the various stock exchanges with valuations over $1 billion but now there are only 7. Here is the list.

The list below is ranked in order of highest to lowest and all numbers are in USDs (go here to convert into other currencies) as of March 31/20. 

1. Canopy Growth Inc. (TSX: WEED; NYSE: CGC)

• Current Market Cap: $4.63B
• Price Decline from Peak 2019 Price: -72.3%
• YTD Price Decline: -31.6%%

2. GW Pharmaceuticals Plc (Nasdaq: GWPH)

• Current Market Cap: $2.53B
• Price Decline from Peak 2019 Price: -52.4%
• YTD Price Decline: -16.2%

3. Cronos Group Inc. (TSX: CRON; Nasdaq: CRON)

• Current Market Cap: $1.93B
• Price Decline from Peak 2019 Price: -76.1%
• YTD Price Decline: -26.1%

4. Curaleaf Holdings Inc. (CSE: CURA; OTCQX: CURLF)

• Current Market Cap: $1.70B
• Price Decline from Peak 2019 Price: -65.2%
• YTD Price Decline: -37.7%

5. Green Thumb Industries Inc. (CSE: GTII; OTCQX: GTBIF)

• Current Market Cap: $1.16B
• Price Decline from Peak 2019 Price: -63.8%
• YTD Price Decline: -40.3%

6. Innovative Industrial Properties Inc. (NYSE: IIPR)

• Current Market Cap: $1.13B
• Price Decline from Peak 2019 Price: -42.9% 
• YTD Price Increase: +1.3%

7. Trulieve Cannabis Corp. (CSE: TRUL; OTCQX: TCNNF)

• Current Market Cap: $1.03B
• Price Decline from Peak 2019 Price: -41.0%
• YTD Price Decline: -22.7%

The 7 stocks above have outperformed the cannabis stock sector as a whole as follows:

• They declined "only" 53.5%, on average, from their peak prices in 2019 vs. 78.6%, on average, for the sector as a whole and
• they have declined "only" 13.4%, on average, YTD vs. 43.9%, on average, for the sector as a whole.