A little over a month ago, we first pointed out something troubling for the bulls: after leading the market in terms of both sentiment and volume, retail participation had collapsed. This was most obvious when looking at OCC option data, where SpotGamma noted "a sense of decay or attrition happening on the call side."

Bloomberg also picked up on this, warning of call fatigue as call option volumes - the preferred investment instrument of millions of young traders - had fallen off a cliff.

Now, it's JPMorgan's turn to report what we discussed previously, namely that the latest data reveals that US retail investors' participation in equity trading declined sharply in March after a strong couple of months and a record high share of 28% in December.

As JPM notes, the share of retail activity in US equity trading is shown in Figure 1 and Figure 2. The data reveals a peak in the share of retail investors in US equity trading in December, a pretty strong January and February, "but a significant drop in March to the lowest share since last September."

How to read the above two charts? Retail brokers (Source in Figure 1) typically route their trades into the OTC market through third-party OTC market venues (Destination in Figure 2). There are six main OTC market venues used by retail brokers: Virtu, Citadel, G1 execution services, Two Sigma Securities, Wolverine, and UBS Securities. T

ransactions between retail brokers and third-party market OTC venues are disclosed every quarter under SEC Rule 606. Figure 1 shows the aggregate share of OTC transactions routed by different retail brokers (ETrade, Charles Schwab, TD Ameritrade, & Robinhood) as a percentage of total (off- and on-exchange) US equity market volume. 

Robinhood's share was very high during December, January, and March, but it fell sharply in March to levels last seen in September/October 2020. ETrade's also fell sharply in March. Figure 2 shows the aggregate share to OTC transaction routed to different market venues (destination flow) by retail brokers, again as percentage of total US equity market volume. G1 and Virtu both saw the biggest drop in March.

At an aggregate level, the share of retail activity had reached a record high of 28% last December as percentage of total US equity market volume, with this share declining sharply to 18% in March. That said, this 18% share is still above pre-coronavirus levels of around 12%, so the drop in March does not herald a return to pre-coronavirus norms.

So while we know what happened, the question is why: even JPMorgan's Nick Panigirtzoglou is confused, writing that "this decline is puzzling given the third round of stimulus checks in March, thus raising questions about the appetite of retail investors to invest in individual stocks or stock options on them."

In response, the JPM analyst writes that what is becoming more clear from these quarterly data is that there has been a change in the behavior of US retail investors during the third round of US stimulus checks. While US retail investor participation in equity trading, likely driven by younger cohorts, was intense during the first and second round of US stimulus checks, the third round of stimulus checks in March saw significantly less participation. 

Instead of individual stocks, US retail investors, perhaps driven by older cohorts, bought passive equity funds such as equity ETFs in March as shown in Figure 3.

What about April? In terms of buying of passive equity funds, there has also been significant slowing as demonstrated by Figure 3. A similar picture emerges when looking at individual stocks and call options on individual stocks, where the preliminary data shows continued weakness in April.

To see this in the option space, JPM looks at small traders equity option flows, i.e., option customers with less than 10 contracts. This data comes from OCC, the world’s largest equity derivatives clearing organization. The data is operated on a weekly basis, with the week ending April 30 as the last available observation.

The next chart illustrates these small traders’ option flows for exchange-traded, individual equity options in the US. After rising to record highs in January, this call option buying metric subsided significantly in February and March.

In April, these call option flows seemed to be consolidating at the lower levels seen at the end of March, signaling that US retail investors have become less willing to invest in call options on individual stocks. Equity baskets containing stocks popular with US retail trading platforms, as shown in Figure 5, are conveying a similar message of continued underperformance in April.

In summary, the latest quarterly data confirms what we speculated back in March; namely that US retail investor participation in equity trading declined sharply in March after a strong January and February and a record high share of 28% in December.

To JPMorgan, "this decline is puzzling given the third round of stimulus checks in March," thus raising questions about the appetite of retail investors to invest in individual stocks or stock options on them. Preliminary data for April shows little improvement in this appetite.