Crypto failures explained: Mt. Gox, Terra, FTX and everyday trader mistakes

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Level 11: Further ResourcesLesson 11.5 · 68 of 6910 min read

Crypto trading failures teach you more than success stories: in a failure, it's easy to see which rule got broken. In this lesson we'll go through the crypto market's biggest collapses, from exchanges that vanished with customer funds and projects promising yields that couldn't come from anywhere to funds wiped out by leverage, and then look at the typical mistakes ordinary traders make. For each case we'll draw a takeaway you can apply to your own account.

Key takeaways
  • Most big losses come not from bad chart analysis but from trusting the wrong platform, leverage or an unsustainable yield model.
  • An exchange that holds your coins is a counterparty risk, and that risk has played out more than once.
  • A promise of high, steady returns with no clear source is the number one warning sign.
  • Retail traders most often lose money by having no plan, using too much leverage and trying to win back their losses.

Why study other people's failures

A success story doesn't clearly show where luck ends and skill begins. A failure is far more honest in that sense: you can almost always point to the moment someone broke an obvious rule. They didn't check where customer funds were held. They believed in a yield that couldn't come from anywhere. They took on leverage that wouldn't survive a sharp move.

Below are real stories that have been written about extensively. There's no need to retell them in full; we'll focus on the causes. For convenience, they fall into four types: the platform failed, the project's model failed, leverage backfired, or the trader failed.

In many of these cases the danger wasn't obvious in advance. Mt. Gox was the largest Bitcoin exchange for a long time, FTX was endorsed by celebrities, and Terra was one of the market's top projects. Size and fame created a sense of safety, and in the end that's exactly what let people down.

Case Year What happened Key takeaway
Mt. Gox 2014 Once the largest Bitcoin exchange, it halted withdrawals and went bankrupt; hundreds of thousands of BTC went missing Don't keep your savings on an exchange
QuadrigaCX 2019 After the founder's death, it turned out customer funds had been squandered An opaque platform is a risk even if it's been running for years
Terra and UST 2022 An algorithmic stablecoin lost its peg and LUNA collapsed almost to zero Stability backed by mechanics rather than reserves can crumble
Celsius 2022 A high-yield platform froze withdrawals and went bankrupt High yield with no clear source is a red flag
Three Arrows Capital 2022 A major fund collapsed because of leverage and bets on Terra Leverage can wipe out even professionals
FTX 2022 One of the largest exchanges went bankrupt in a matter of days; customer funds had been misused Size and reputation don't guarantee your money is safe

When the platform failed

Tokyo-based Mt. Gox once handled the lion's share of all Bitcoin trading. In 2014 the exchange halted withdrawals and filed for bankruptcy: about 850,000 BTC had gone missing (some were later found). Anyone who kept coins on the platform lost access to them for years. Creditor payouts only began in 2024, a full decade later.

QuadrigaCX was Canada's largest crypto exchange. When its founder died suddenly at the end of 2018, the story was that only he had access to the wallets. But an investigation by the Ontario Securities Commission found otherwise: for years, the founder had been spending customer funds on trading on other platforms and on personal expenses.

In 2022, FTX was one of the best-known exchanges in the world, with top-tier investors and ads in sports stadiums. In November, after reports about its sister trading firm Alameda Research, customers rushed to withdraw their money, only to find it wasn't there. FTX went bankrupt within days, and its founder, Sam Bankman-Fried, was eventually convicted of fraud in the US.

The takeaway is simple: the exchange holding your coins is your counterparty, and you can't judge how reliable it is by its ads or user count. Spread your funds across platforms, keep only what you're trading on an exchange, and be on guard when withdrawals start getting delayed. As for protecting the account itself from hackers, the lesson on crypto exchange security covers that in detail.

Important · Not your keys, not your coins

In all three stories, the people who got hurt were the ones who trusted a platform with their coins. Keep your savings in your own wallet, and keep only what you're actively trading on an exchange.

When the project's model failed

Terra was one of the largest ecosystems on the market. Its stablecoin, UST, held its dollar peg not with reserves but through a swap mechanism with the LUNA token and generous yields on the Anchor protocol. In May 2022, large withdrawals set off a chain reaction: UST lost its peg, LUNA was minted in staggering amounts, and within days both tokens fell almost to zero.

Celsius pitched itself as a crypto bank: deposit your coins and earn interest well above anything a bank pays. The platform was putting customer money into risky strategies. When the market turned down in 2022, Celsius froze withdrawals and then filed for bankruptcy. Its founder later pleaded guilty to fraud.

Both stories come down to a question few people asked in time: where does the yield actually come from? If the answer is "that's just how the protocol works" or "the strategy is a secret," it's most likely being paid for by fresh money coming in. The lesson on scam projects explains how to spot setups like these in advance.

When leverage failed

Three Arrows Capital was one of the biggest crypto funds, and its founders were seen as seasoned traders. The fund borrowed huge sums from lending platforms and placed big bets, including on LUNA. After Terra collapsed, it couldn't pay back its debts. In 2022 a court ordered it into liquidation, and its lenders started going under one after another.

Leverage isn't just deadly for funds. In March 2020, Bitcoin lost about half its value in a matter of days, and forced liquidations made the drop worse: each one triggered a new wave of selling. In October 2025 history repeated itself, with a record dollar amount of positions liquidated in a single day. In hours like these, stops get filled at worse prices than the ones you set, and highly leveraged positions get wiped out even for traders who called the direction right in the end.

The lesson on margin trading explains how margin and liquidations work in detail. The main takeaway here is simple: leverage doesn't forgive rare events, and in crypto, rare events happen regularly.

When the trader failed

Big collapses make the news, but retail traders lose most of their money quietly, following the same well-worn scripts. There's no malice involved, just the same habits passed from one person to the next. The lesson on common beginner trading mistakes covers the typical slip-ups in detail; here we'll focus on the ones that most often lead to big losses.

Usually, the trader has no written plan: where to exit if the trade goes wrong, how much of the account they're willing to lose, what to do after a losing streak. In-the-moment emotions make the decisions.

  • The whole account in one coin, bought at the peak of the hype.
  • Averaging down on a falling position with no limit until the money runs out.
  • A stop-loss that keeps getting moved further away to avoid taking the loss.
  • Trying to win back a loss with bigger size and more leverage.
  • Blindly copying signals from paid chats and influencers.
  • Sending money to a "guaranteed-return platform" on a stranger's advice.

Example · What a typical chain of events looks like

A trade is down five percent. Instead of taking a break, the trader opens a new leveraged position to win it back fast, and when the price moves against them, they move the stop. One bad day like that can wipe out half the account.

How to review your own failure

Other people's cases are useful, but real learning starts when you review your own. A losing trade you never review is just money thrown away; one you've reviewed is the price you paid for experience. Don't look for someone to blame. Look for the rule you broke, or the rule you didn't have.

Write your reviews down and reread them once a month. After a few months you'll see that most of your losses come from two or three recurring mistakes. Fixing those will do more for you than any new indicator or the hunt for a perfect strategy.

  1. Describe the trade in facts: entry, exit, size, leverage, result.
  2. Find the moment your decision departed from the plan, or admit there was no plan.
  3. Identify the type of mistake: platform, asset model, leverage or your own behavior.
  4. Write one new rule that would have prevented this mistake.
  5. Add the rule to your trading plan and test it on your next trades.

Tip · Make your mistakes for free first

The behavioral mistakes from this lesson, like moving your stop, revenge trading and piling on leverage, show up on a demo account too. Catch them and review them there while they cost nothing: discipline you build without risk carries over to real trading later.

Lesson task

Take one of your own losing trades, real or on a demo account, and review it using the five steps from the "How to review your own failure" section. If you don't have any trades yet, review one case from the table the same way, for example FTX: which rule did the affected customers break, and what does that mean for your account? The result is one new rule written into your trading plan.

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FAQ

Did Mt. Gox and FTX customers get their money back?

Payouts to Mt. Gox creditors began in 2024, ten years after the bankruptcy. FTX is also paying customers back through its bankruptcy process. But years without access to their money, plus disputes over which exchange rate to use when valuing the debts, were a real loss in themselves.

How can I tell if an exchange might go bankrupt?

There's no surefire way. Red flags include delayed withdrawals, opaque reserves, bonuses that look too generous and ties between the exchange and its own trading firm. The best protection is never to keep more on one platform than you can afford to lose.

Why do experienced funds lose everything too?

Experience doesn't protect you from leverage and concentration. Three Arrows Capital made big bets with borrowed money, and a single collapse was enough to bring the fund down. The more borrowed money involved, the smaller the market move it takes to cause a disaster.

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