Definition
What securities-backed lending actually means
Securities-backed lending is a form of borrowing where you use your investment portfolio — stocks, ETFs, bonds, or mutual funds — as collateral to secure a loan or credit line. You receive cash without selling your holdings.
The lender (typically a bank, broker-dealer, or specialized lending firm) evaluates your portfolio and extends credit based on a percentage of its market value. Your securities remain in your account but are pledged — meaning the lender can liquidate them if you fail to meet the loan terms.
"Securities-backed lending solves a specific problem: you need cash, but selling your investments would trigger taxes, eliminate upside exposure, or force you out of a position you want to keep."
The securities-based lending market reached approximately $175 billion in outstanding balances at its 2022 peak, according to Federal Reserve data. As of early 2024, balances sat around $138 billion — still substantial and growing as investors seek tax-efficient liquidity strategies.
How It Works
The mechanics of a securities-backed loan
Here's the typical process for establishing a securities-backed line of credit:
Portfolio evaluation
The lender reviews your holdings — asset types, concentration, volatility, and liquidity — to determine how much credit to extend. Diversified ETFs typically receive higher advance rates (65–80%) while concentrated single-stock positions receive lower rates (40–60%).
Credit line establishment
You receive a credit line based on your portfolio's loan-to-value ratio. For a $1 million diversified portfolio, this might be $500,000–$700,000 in available credit.
Draw funds as needed
You borrow only what you need, when you need it. Interest accrues only on the amount drawn, not the full credit line. There is typically no fixed repayment schedule.
Ongoing monitoring
The lender continuously monitors your collateral value. If your portfolio declines significantly, you may receive a maintenance call requiring you to deposit additional collateral, repay part of the loan, or face liquidation of pledged securities.
Repayment
You repay the loan on your own timeline — from portfolio sales, other income, or refinancing. Most securities-backed credit lines have no fixed maturity, though terms vary by lender.
Throughout this process, you continue to receive dividends and retain ownership of your securities. However, voting rights may be suspended while shares are pledged, depending on the lender's terms.
Why Investors Use It
The case for borrowing instead of selling
The primary motivation is tax efficiency. Selling appreciated stock triggers capital gains taxes — potentially 20% federal, 3.8% Net Investment Income Tax, and up to 13.3% in California. For a high-income investor in California, the combined rate on long-term gains can reach 37.1%.
Example: $1M Portfolio, $200K Cost Basis
Sell Stock
$296,800
Tax owed on $800K gain
At 37.1% combined rate (federal 20% + NIIT 3.8% + CA 13.3%), selling triggers immediate taxes, leaving $703,200 to reinvest.
Borrow Against It
$0
Capital gains tax triggered
Borrowing against the portfolio provides liquidity without a taxable sale. Interest cost at ~6% on a $500K draw = $30,000/year — far less than the tax bill.
Key Trade-Off: Borrowing avoids the tax event but introduces interest cost, variable-rate risk, and the possibility of forced liquidation if markets decline. It is not free money — it is a leveraged strategy with real risks.
Beyond taxes, investors use securities-backed lending to maintain market exposure. If you believe your stock will continue to appreciate, selling locks in today's value. Borrowing against it lets you access cash while keeping the upside — assuming the stock doesn't decline enough to trigger a margin call.
Eligible Collateral
What you can (and cannot) borrow against
Not all securities receive the same borrowing treatment. Lenders assign advance rates based on liquidity, volatility, and concentration risk:
| Asset Type | Typical Advance Rate |
|---|---|
| U.S. Treasury bonds | 80–95% |
| Investment-grade corporate bonds | 70–85% |
| Diversified ETFs (S&P 500, total market) | 65–80% |
| Blue-chip large-cap stocks | 60–75% |
| Mid-cap single stocks | 50–65% |
| Concentrated single-stock positions | 40–60% |
| Small-cap or volatile stocks | 30–50% |
| Penny stocks, options, illiquid securities | Usually ineligible |
Concentration Risk: A $2 million portfolio concentrated in a single stock may receive a lower advance rate (40–50%) than a $1 million diversified portfolio (65–80%). Lenders penalize concentration because a single stock can gap down far more violently than a diversified index.
The Embark Strategy
Diversify Without Selling Your Stock
Engineers at Google, Meta & Apple use Embark’s IRS 721 strategy to unlock income and diversification from concentrated positions — with no taxable event.
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Interest Rates
What securities-backed loans cost in 2026
Most securities-backed credit lines charge a variable rate tied to a benchmark — typically SOFR (Secured Overnight Financing Rate), currently approximately 3.6% as of May 2026. The lender adds a spread of 1.5–3 percentage points depending on the loan size and collateral quality.
| Portfolio Size | Typical All-In Rate (2026) |
|---|---|
| $100K–$500K | 6.0%–7.0% |
| $500K–$1M | 5.5%–6.5% |
| $1M–$5M | 5.0%–6.0% |
| $5M+ | 4.6%–5.5% |
These are variable rates. If SOFR rises — as it did from near-zero in 2021 to over 5% in 2023 — your borrowing cost rises accordingly. This is a critical risk for anyone relying on cheap borrowing as a permanent tax-deferral strategy.
For comparison: a home equity line of credit (HELOC) currently runs 7.5%–9.5%, a personal loan 8%–15%, and a margin loan 6.5%–12% at retail brokerages. Securities-backed credit lines typically offer the lowest rate of these options for portfolios over $500,000.
Key Risks
What can go wrong — and how quickly
Securities-backed lending is not risk-free. It is a leveraged strategy, and leverage magnifies losses as much as it preserves gains. The three primary risks:
When SBL Works Well
- Portfolio is diversified across 20+ positions
- Borrowing less than 40% of portfolio value
- Short-term liquidity bridge (1–3 years)
- Strong external cash flow to service interest
- Conservative maintenance cushion maintained
When SBL Becomes Dangerous
- Concentrated in a single volatile stock
- Borrowing at or near maximum LTV
- No backup plan if markets drop 30–50%
- Using proceeds to buy more risk assets
- No external income to cover interest if stock falls
During the COVID crash of March 2020, the S&P 500 fell 34% in 23 trading days. FINRA data shows aggregate margin debt declined from $562 billion (January 2020) to $479 billion (March 2020) — an $83 billion contraction representing widespread forced liquidation and voluntary deleveraging.
Forced Liquidation: Under FINRA rules, broker-dealers can liquidate pledged securities to meet margin or maintenance calls without prior notice to the customer. You may not receive a phone call. The first sign of a problem may be a confirmation that shares have already been sold.
Best Use Cases
When securities-backed lending makes strategic sense
Real Estate Down Payment
Bridge financing for a home purchase while waiting for a bonus, IPO, or planned stock sale at a better time.
Tax Payment
Cover an unexpected tax bill without liquidating positions in a down market or at short-term rates.
Business Expenses
Fund a venture or business need without selling stock that you expect to appreciate further.
Diversification Bridge
Borrow short-term while gradually selling concentrated positions over time to manage tax impact.
The common thread: each use case involves a temporary liquidity need where the investor has strong conviction in their holdings and a clear repayment plan. Securities-backed lending works best as a bridge — not as a permanent strategy.
The Embark Alternative
Income from stock without borrowing or selling
Securities-backed lending solves the liquidity problem by adding debt. But there is a different approach for investors who want ongoing income from concentrated stock rather than a one-time cash draw.
The Embark Approach
10%+ Targeted Annual Income
Generated from your existing stock position
No Margin-Call Risk
You're not borrowing — no forced liquidation
Tax-Deferred via §721
In-kind contribution avoids capital gains trigger
Keep Upside Exposure
Maintain participation in your stock's growth
Where securities-backed lending gives you a lump sum you must repay (with interest), Embark's SPV structure generates recurring income from your concentrated position through institutional-grade options strategies — without selling the stock, without borrowing against it, and without triggering a taxable event.
FAQ
Common questions about securities-backed lending
What is securities-backed lending?
It is a form of borrowing where your investment portfolio (stocks, ETFs, bonds) serves as collateral for a loan or credit line. You receive cash without selling your holdings, but the lender can liquidate your securities if you fail to meet the loan terms.
How does borrowing against stocks work?
A lender evaluates your portfolio and assigns a loan-to-value ratio based on the asset types, diversification, and volatility. You can draw cash up to that limit. Interest accrues on drawn amounts, and your securities remain pledged until the loan is repaid.
Is securities-backed lending the same as a margin loan?
No. A margin loan (governed by Regulation T) is used to buy more securities. A securities-backed line of credit (SBLOC) is a non-purpose loan — proceeds cannot be used to purchase securities. They have different regulations, use cases, and risk profiles.
Can you borrow against stocks without selling them?
Yes. That is exactly what securities-backed lending enables. Your shares remain in your account but are pledged as collateral. You continue to receive dividends (in most cases) and benefit from appreciation — but you face forced liquidation risk if the value drops significantly.
What are the risks of borrowing against a stock portfolio?
The primary risks are: (1) margin/maintenance calls if your portfolio declines, (2) forced liquidation of your securities without notice, (3) variable interest-rate increases, and (4) the possibility that a market crash triggers a tax event (forced sale) at the worst possible time.
Beyond Borrowing
Income Without Debt — A Different Approach
Securities-backed lending gives you access to cash, but you pay interest and face margin-call risk. Embark's §721 SPV generates 10%+ targeted income from your concentrated stock — without selling, without borrowing, and without triggering capital gains.