January 28, 2021. GameStop's price keeps changing on your screen. Your broker says you can sell shares you own, but cannot buy more. Has the stock stopped trading, or has your broker blocked purchases?
A stock can keep trading while your buy button is unavailable. That was one of the puzzles of GameStop's January–February frenzy. The price surge drew the headlines; the buying restrictions exposed the money brokers needed behind the scenes to keep trades going.
A company became a shared cause
GameStop sold video games through physical stores while digital downloads competed for those sales. On January 11, the company announced Ryan Cohen's appointment to its board. He had co-founded the online pet retailer Chewy, and his arrival fed hopes that GameStop could reinvent its business online.
On Reddit's WallStreetBets forum, hopes for the business mixed with enthusiasm for pressuring investors betting against it. A meme stock draws concentrated attention and trading enthusiasm through social media. For some investors, owning GameStop had become a cause.
Individuals and institutions both traded GameStop. Some investment funds held shares and profited; others bet against it and lost money. Wall Street was on both sides of the trade.
More than a squeeze
A short seller borrows shares, sells them and later buys shares to return. That repurchase is short covering. Rising prices can pressure short sellers to cover, adding demand that pushes prices higher still. That feedback is a short squeeze.
Short interest counts shares sold short but not yet covered. The SEC staff report on the episode put GameStop's January short interest at 122.97% of float — the shares available for public trading.
A share can be borrowed, sold to a new owner and lent again. The same share can therefore support more than one open short position. A figure above 100% alone does not prove illegal short selling.
Staff found that covering contributed to the rise. But purchases by the large short sellers they identified were a small part of total buying. Prices stayed high after the direct effects of covering would have faded. Staff attributed the sustained rally to wider enthusiasm, without claiming to know every buyer's motive.
One price, different entry points
The peak depended on when you looked. January 27 brought the month's highest closing price. January 28 brought the intraday high — the highest price reached during trading. Within weeks, the price had plunged; by late February, the stock was rebounding again.
All prices here are in US dollars on the original share basis, before GameStop's four-for-one split in July 2022.
Suppose you bought one share at the January 27 close of $347.51. At the $40.59 price cited by SEC staff for February 19, your loss before costs and tax would be:
Divide the $306.92 loss by the $347.51 purchase price: about 88.3%. On a $200 investment, that percentage price loss would leave about $23.
Someone who bought earlier for less than $40.59 could still be ahead while you had lost most of your money. The crowd has no single purchase price. A headline about its winnings cannot tell you what happened in your account.
The cash needed behind a trade
In January 2021, the US settlement cycle was T+2: money and shares were due two business days after the trade. Your order could show as filled while that final transfer was still ahead.
A clearinghouse stands between member firms and backs their trades if one cannot pay or deliver the shares. If a buyer's firm fails after the price collapses, the seller is still owed the agreed amount. Completing the trade can leave the clearinghouse with a loss.
Clearing collateral is cash or eligible securities a member deposits to cover that risk. Sharp price swings can increase the required buffer. So can having unsettled trades concentrated in a few stocks: the same price move hits many commitments at once.
The deposit demand falls on the clearing member, which may be your broker or a firm it uses. Your available cash is separate from the collateral needed across that firm's business. You can have enough money for a purchase while your broker faces a funding shortfall.
Some brokers responded by limiting purchases. SEC staff said those restrictions were broker decisions, not instructions from the National Securities Clearing Corporation (NSCC), the clearinghouse. A demand for collateral created funding pressure; it did not order every broker to block the same trades.
Read the notice before the next order
The March 2020 market-wide pauses stopped trading across the US stock market. GameStop's volatility pauses stopped both buying and selling in one stock across trading venues. A broker purchase restriction limits new purchases through that broker, while sales may still be allowed. Reopening the stock does not automatically reopen your buy button.
| Event | Who decides | What changes |
|---|---|---|
| Volatility pause | Listing exchange | Buying and selling pause across venues |
| Purchase restriction | Broker | New purchases limited at that broker |
Two example notices make the difference clear. “Volatility pause; awaiting reopening” from the listing exchange matches the first row. Your broker's “Sales allowed; new purchases blocked” matches the second. That second notice answers the opening puzzle: your broker restricted purchases while trading could continue elsewhere.
The original notice's source, affected trades and timestamp tell you which limit applied when. An unsourced screenshot saying only “trading restricted” leaves that question unanswered. Even with permission to trade, a live quote cannot guarantee a fill at that price; your order's terms still matter.
The squeeze story suggested why more buying might arrive. It did not establish what GameStop's business was worth or set a floor under its shares. The earlier bubble histories showed how shared enthusiasm can feel like evidence that a price will hold.
Next, 2022, when stocks and bonds fell together, moves from crowded trades to a shared inflation shock across asset classes.
In short
- Short covering helped GameStop rise, but did not explain the whole rally.
- Short interest above 100% of float is not, by itself, proof of illegal short selling.
- An exchange pause stops trading in the stock; a broker purchase restriction limits buying through that firm.
- Entry price and the ability to trade shape your result, whatever the crowd's story.
- A squeeze story does not guarantee a lasting price floor.