(Bloomberg Opinion) -- Would you gamble your life savings on a few hands of blackjack? Probably not. But as a former manager of options trading, I’ve seen amateur investors — encouraged by posts on Reddit and X of massive, easy overnight wins, and offers of “zero-commission” trading online — lose much of their net worth on risky bets.
What bothers me most is that some big trading firms are actually paying brokerages to take the other side of these trades, knowing they have better information than the small investors and so will profit big. These payments are known as “payment for order flow.”
In 2022, large trading firms including Citadel and Susquehanna paid a total of $2.9 billion to brokerages such as TD Ameritrade Corp. and Robinhood Markets Inc. to trade against their customers’ orders, according to SEC data compiled by Alphacution Research Conservatory. In short, they are paying for the privilege of taking advantage of the unsophisticated investor.
This is akin to a few Vegas casinos paying travel agents to send them droves of unsophisticated players. The travel agent, like a brokerage, is paid by volume, and so wants to promote as much betting as possible. Other casinos, like the trading firms that don’t pay for retail orders, would have reduced access to these profitable inexperienced players.
Trading by retail investors has recently reached as high as 60% of the total market volume in options, according to new research by Svetlana Bryzgalova, Anna Pavlova and Taisiya Sikorskaya of the London Business School, with dollar volumes increasing by more than 10 times in the last decade. (The firms I worked for did not pay brokerages for orders, but benefited from increased volumes in retail trading.)
And the surge is only accelerating. Last May, exchanges started listing options that expire on each day of the week rather than three days, and they have exploded in popularity. With the potential of making 50 or even 100 times your investment in a day, they are the cheapest and fastest way to potentially win big, the biggest dopamine hit available for sale on the exchange. According to research at the University of Münster, 75% of retail’s S&P 500 option trades today are of this variety.
For seven years I ran options strategies at large trading firms, so I understand that options trading can make you rich, fast. But even though many players claim a winning strategy, the vast majority lose money. I quickly learned that the small bettors tend to choose the worst investments. And the house always makes money.
Buying an option provides you the opportunity, but not the obligation, to buy or sell a stock at a certain price. Let’s say a stock is trading at $100, and you think the price will go up. You might pay $5 for the right to buy the stock for $110 at any point in the next six months. If the stock doesn’t reach $110, the option expires, and you lose $5. If the stock goes to $150, you make $45 on only a $5 initial investment.
If our model said an option was worth a dollar, we’d buy when the price hit 99 cents or sell for $1.01, collecting the invisible theoretical penny difference. We repeated this process with thousands of different options, every time a customer wanted to trade. Those small amounts added up to big ones.
Roughly a dozen other trading firms used similar strategies, competing to offer the best price to the customer. Collectively, we made up the house. This can be highly lucrative: In my last three years running the desk, we didn’t have a single losing month. Several other firms post equally impressive results each year.
The most important rule of market making: Not all customers are the same. Sometimes, shrewd hedge funds had better information than us and also had enough money behind them to move the market in their favor. Trading against them would be a losing proposition, so we avoided these orders.
On the other hand, customers trading small sizes consistently lost money. They had no informational advantage, and their orders could never move the market against us. Taking the other side of these trades was highly profitable.
Supporters argue that platforms like Robinhood allow everyday people access to profitable strategies. However, research at MIT indicates that retail traders lack enough private information to win. And according to London Business School research, buying $100 of the popular “zero days to expiration” options would cost up to $6 to $12 just to enter the position. Little surprise then that retail traders gave up an estimated $6.5 billion in trading cost between November 2019 and June 2021, even though most paid no direct commission to their brokerage.
What can be done to protect them? First, regulators should prohibit payment for order flow, creating a level playing field where all trading firms can compete by offering the best price.
Regulators should also continue to penalize dubious advertising practices that platforms have used to attract uninformed options customers. In 2021, the financial regulatory body FINRA fined Robinhood a record $70 million for “systemic supervisory failures,” accusing the company of allowing users to make riskier trades than they were qualified for. Robinhood continues to present the riskiest options — the ones that expire almost immediately — to the user first in the options trading menu, without any mention of their dangers.
How can retail investors beat these odds? As with blackjack, it’s generally best to avoid the table altogether. Or to deposit small amounts, understanding you are gambling, not investing.
Buying low-cost index funds is still the best way to build long-term wealth. The S&P index has returned an average of 7% a year after inflation since its inception a century ago. Only 10%-15% of fund managers manage to beat the market over a decade.
Now that I’m in business school, I no longer have troves of live market data or algorithms to instantly react to market news. Trading professionally made me recognize just how much of an information disadvantage I am at now. Instead, I stick with much simpler investments, and small investors would do well to do the same.
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