SILICON VALLEY BANK'S BIGGEST PROBLEM WASN'T THAT IT HAD NO ASSETS
Silicon Valley Bank had more than $200 billion in assets. It still couldn't survive a bank run.
When Silicon Valley Bank collapsed in March 2023, one question seemed obvious:
How can a bank with more than $200 billion in assets suddenly fail?
The answer is one of the most important ideas in banking:
Having assets is not the same as having cash available when customers want it.
SVB's problem was a dangerous combination of interest-rate risk, unrealized losses, concentrated deposits and a sudden liquidity crisis.
SVB HAD A LOT OF ASSETS
At the end of 2022, Silicon Valley Bank had approximately:
So this wasn't a tiny bank that simply ran out of money.
It was a huge financial institution.
But look at what happened to those assets.
A large amount of the deposits flowing into SVB had been invested in medium- and long-term U.S. Treasury and agency securities.
That decision became extremely important when interest rates started rising.
THE INTEREST-RATE PROBLEM
Imagine you buy a bond that pays a fixed interest rate.
Then, later, newly issued bonds start paying much higher rates.
Your old bond becomes less attractive.
Therefore:
Interest rates rise
↓
Existing fixed-rate bond prices fall
SVB had accumulated a large portfolio of these longer-duration securities during the period of extremely low interest rates.
When rates rose rapidly, the market value of those securities fell.
The FDIC later described interest-rate risk as being at the core of SVB's problem.
BUT SVB DIDN'T HAVE TO SELL EVERYTHING
This is where the story gets misunderstood.
A bond losing market value does not automatically mean the bank has permanently lost the entire amount.
If SVB could hold certain securities until maturity, it could generally receive the contractual principal and interest, assuming the securities paid as expected.
That meant some of the losses remained unrealized.
The problem was:
What if SVB needed cash before maturity?
That changed everything.
THEN DEPOSITORS STARTED WITHDRAWING MONEY
A bank doesn't keep every customer's deposit sitting in a vault.
It uses deposits as a major source of funding and invests or lends that money.
So imagine:
Bank receives $100
↓
Bank keeps part available
↓
Bank invests the rest
Now 100 customers suddenly want their $100 back.
The bank needs liquidity.
If its investments are easy to sell, that's manageable.
But if selling them means taking a huge loss, the situation becomes much more dangerous.
That was essentially the problem SVB faced.
THE $1.8 BILLION LOSS
On March 8, 2023, SVB announced that it had sold a large portfolio of available-for-sale securities and recognized an approximately $1.8 billion after-tax loss.
At the same time, it announced plans to raise roughly $2.25 billion in capital.
The announcement was supposed to strengthen the bank.
Instead, it frightened depositors and investors.
The market began asking:
"If SVB has to sell these securities now, how large are the losses elsewhere in the portfolio?"
THE BANK RUN STARTED
The next day, SVB's stock fell dramatically.
And its customers began withdrawing their deposits.
But SVB's customer base was unusual.
A large portion of its deposits came from companies connected to the venture-capital ecosystem rather than millions of small retail depositors.
The FDIC later noted that more than 90% of SVB's deposits were uninsured.
That mattered enormously.
Large corporate customers had much more reason to worry about keeping money above the insured limit inside a bank that suddenly appeared vulnerable.
THEN $42 BILLION LEFT IN ONE DAY
On Thursday, March 9, 2023, approximately $42 billion in deposits left SVB.
And another roughly $100 billion was scheduled to leave the following day.
The FDIC later described the situation as nearly 30% of deposits leaving within hours, with another enormous amount queued for withdrawal.
Now the difference between:
"We have assets"
and
"We have cash right now"
became critical.
SELLING ASSETS CREATED ANOTHER PROBLEM
SVB could try to raise cash by selling securities.
But selling securities that had fallen significantly in market value meant realizing losses.
And once those losses became real, they could damage the bank's capital position.
So SVB was caught between two pressures:
Keep the securities
→ preserve the possibility of receiving their value at maturity
Sell the securities
→ obtain cash now, but potentially realize large losses
The bank needed liquidity at precisely the moment when converting its assets into cash became expensive.
THIS IS THE BANKING VERSION OF A MISMATCH
SVB had assets that were relatively long-term.
Its depositors could demand their money immediately.
That's a maturity and liquidity mismatch.
Think about it this way:
You own a house worth €500,000.
You owe someone €500,000 today.
You technically have an asset worth €500,000.
But if you have to sell the house within 24 hours, you may not receive the amount you expected.
The problem isn't necessarily that you're poor.
The problem is that your asset and your obligation operate on different timelines.
SVB'S DEPOSITS WERE ALSO HIGHLY CONCENTRATED
SVB's deposits were heavily connected to technology companies, startups and venture-capital-backed businesses.
During the years of abundant venture capital, deposits grew rapidly.
According to the FDIC, SVB's assets grew from less than $60 billion at the end of 2019 to $209 billion at the end of 2022.
That rapid growth meant the bank accumulated a huge amount of deposits.
And much of that money was invested in longer-term securities.
The structure worked while deposits remained stable and interest rates were low.
It became much more fragile when those assumptions changed.
THE MOST DANGEROUS PART WAS THE SPEED
A traditional bank run might develop over days or weeks.
SVB's happened extraordinarily quickly.
Modern banking made the process even faster.
Customers could:
Receive information online
Communicate through social media
Transfer millions electronically
Move money between banks without physically visiting a branch
The FDIC reported that customers withdrew $42 billion in deposits on March 9 alone.
The bank didn't have the luxury of waiting for its long-term assets to mature.
SVB WAS CLOSED THE NEXT DAY
On March 10, 2023, California banking regulators closed Silicon Valley Bank and appointed the FDIC as receiver.
At that point, the bank had approximately $209 billion in assets at year-end 2022.
Two days later, regulators invoked the systemic risk exception and transferred all deposits and substantially all assets to a new bridge bank.
The FDIC ultimately arranged for First-Citizens Bank to acquire a large portion of the bridge bank's assets and deposits.
SO WHAT ACTUALLY KILLED SVB?
It wasn't simply:
"SVB had bad assets."
And it wasn't simply:
"SVB ran out of money."
The failure came from several things interacting:
Rapid deposit growth
↓
Large investment in longer-duration securities
↓
Interest rates rise
↓
Bond values fall
↓
Unrealized losses grow
↓
SVB needs to sell securities
↓
Losses become realized
↓
Depositors become frightened
↓
Mass withdrawals
↓
SVB needs even more liquidity
↓
The bank fails
The FDIC later described SVB's failure as a liquidity run, with the loss of market confidence triggered by the securities sale and questions about the bank's capital position.
THE ACCOUNTING DETAIL MATTERED
SVB's 2022 SEC filing shows just how large the unrealized losses had become.
Its available-for-sale securities included U.S. Treasury securities, agency securities and mortgage-related securities with substantial unrealized losses.
For example, the filing showed approximately $1.071 billion of unrealized losses on U.S. Treasury securities and $2.533 billion of total unrealized losses across its AFS securities portfolio at the end of 2022.
Those numbers didn't automatically mean the bank was insolvent.
But they mattered enormously once SVB had to sell securities to satisfy withdrawals.
THE DIFFERENCE BETWEEN SOLVENCY AND LIQUIDITY
This is probably the most important lesson.
SOLVENCY
Can the value of your assets ultimately cover your obligations?
LIQUIDITY
Can you obtain enough cash when you need it?
A business can have valuable assets and still experience a liquidity crisis.
For a bank, this distinction is particularly important because its liabilities — customer deposits — can be withdrawn much faster than many of its assets can be converted into cash without losses.
WHY THE STORY IS BIGGER THAN SVB
The FDIC later pointed out that SVB's failure exposed a broader banking vulnerability.
At the end of 2022, FDIC-insured banks collectively had approximately $620 billion in unrealized losses on investment securities.
The problem was that these losses could become actual losses if banks were forced to sell securities to meet liquidity needs.
That doesn't mean those banks were all about to fail.
It demonstrates something more subtle:
An unrealized loss can remain manageable until the institution is forced to realize it.
THE REAL LESSON
SVB's story wasn't really about a bank that had no assets.
It was about a bank whose:
Assets were heavily exposed to rising interest rates
Deposits were unusually concentrated
Deposits were heavily uninsured
Assets and liabilities had different time horizons
Liquidity position deteriorated extremely quickly
And once depositors lost confidence, the bank didn't have enough time to wait for its longer-term assets to mature.
MAACAT PERSPECTIVE
A balance sheet can make a company look enormous.
SVB had more than $200 billion in assets.
But a bank doesn't survive simply because the number on the asset side is large.
You have to ask:
What are those assets?
How quickly can they become cash?
What happens to their value if interest rates change?
How quickly can the liabilities come due?
SVB's biggest problem wasn't that it had nothing.
It was that the things it owned and the money its customers wanted were moving on completely different timelines.
And when everyone wanted their money at once, that difference became fatal.
