Definitive Guide
What is a variable rate preferred stock?
The complete guide to the newest class of income-generating securities. How the dividend adjusts, why the price stays near par, and what you need to know before investing.
The Basics
A stock that pays you monthly and adjusts its own yield
Think of it like a savings account that trades on the stock market. It targets a $100 share price, pays monthly income, and uses two mechanisms to keep that price stable. When the price dips below $100, the issuer raises the rate to attract more buyers. When the price climbs above $100, the issuer sells new shares into the market through an at-the-market (ATM) program, increasing supply and pushing the price back down. The rate may also decrease to reduce demand.
Unlike a savings account, a variable rate preferred stock is not FDIC insured. Your principal is not guaranteed and you could lose money. The higher yield - currently up to 12.75% annualized - reflects that additional risk. You are lending capital to a company, and your return depends on that company's ability to keep paying.
The variable rate is the key innovation. Traditional preferred stocks pay a fixed dividend forever. If interest rates rise, the share price falls because the fixed payment becomes less attractive. A variable rate preferred avoids that trap by adjusting its payment monthly, keeping the share price anchored near par value.
How It Compares
Not a bond. Not a stock. Something in between.
Savings Account
- Rate set by bank
- FDIC insured up to $250K
- Instant access to funds
- Typical yield: ~4%
Traditional Bond
- Rate fixed at purchase
- Returns principal at maturity
- Price fluctuates with interest rates
- Typical yield: 3-5%
Variable Rate Preferred
- Rate adjusts monthly
- No maturity date
- Targets $100 par value
- Current yield: up to 12.75%
A variable rate preferred stock borrows features from all three. Like a savings account, the rate adjusts. Like a bond, it has a face value. Like a stock, it trades on an exchange. But it is its own category, with its own risk and reward profile.
How It Works
The anatomy of a variable rate preferred stock
Par value and pricing
Every variable rate preferred stock has a par value, typically $100. This is the price the issuer originally sold shares at and the price the variable rate mechanism is designed to maintain. Think of it as a gravitational center. The share price will drift above and below par from day to day, but the rate adjustment pulls it back.
Because the price stays close to par, you avoid a major problem with traditional preferred stocks: duration risk. A fixed-rate preferred priced at $25 might drop to $18 if interest rates rise. A variable rate preferred adjusts its payment instead, keeping the share price stable. That stability makes it easier to plan around and easier to exit when you need to sell.
The price stability comes from two forces working together. When the share price trades above $100, the issuer sells new shares through an at-the-market (ATM) offering program. This increases supply, creating downward pressure on the price. At the same time, the issuer may lower the dividend rate, reducing demand. When the price trades below $100, the opposite happens: ATM issuance pauses (no new supply) and the rate increases to attract buyers. These two levers - supply control and yield adjustment - act as counterweights that keep the price anchored near par.
Share price stays near $100 par
Two forces keep the price at par
When price is above $100
- Issuer sells new shares via ATM (more supply)
- Rate may decrease (less demand)
- Both forces push price back down toward $100
When price is below $100
- ATM issuance pauses (no new supply)
- Rate increases (more demand)
- Both forces push price back up toward $100
This dual mechanism is unique to variable rate preferreds. Traditional preferreds and bonds have no equivalent.
Variable dividend rate
Each month, the issuer announces the next month's dividend rate. The rate is expressed as an annual percentage of par value. For example, an 11.50% annual rate on a $100 par share means roughly $0.958 per share per month. The issuer can raise or lower this rate at their discretion, and they use it as a tool to manage the share price.
If shares trade below par, the issuer typically raises the rate to make the stock more attractive to buyers, pushing the price back up. If shares trade above par, the issuer has two tools: they can lower the rate to reduce demand, and they can sell additional shares into the market through their ATM program to increase supply. The rate adjustment controls demand. The ATM controls supply. Together they create a self-correcting mechanism that traditional fixed-rate preferreds lack entirely.
STRC's rate has increased every month since launch.
Cumulative dividends
Both STRC and SATA are cumulative preferred stocks. That means if the issuer ever misses a dividend payment, the unpaid amount does not disappear. It accrues and must be paid in full before any common stockholders receive dividends. This is a structural protection that common stock does not offer.
While cumulative rights do not guarantee you will be paid on time, they ensure that missed payments become a liability the company must resolve. No common stock dividend can be declared until all preferred arrears are settled.
Month 1
Paid
Month 2
Missed (accrues)
Month 3
Paid + Month 2 makeup
Perpetual structure
Unlike a bond, a variable rate preferred stock has no maturity date. There is no expiration where the issuer gives you your money back. You hold it as long as you want and sell on the open market when you are done. This makes it perpetual, similar to common stock, but with the income characteristics of a bond.
The perpetual nature is a double-edged sword. On one hand, you never lose the income stream to a maturity event. On the other, you cannot simply wait for maturity to get par value back if the share price drops. Your exit is always the market.
Traditional Bond
Variable Rate Preferred Stock
The Issuers
Why would a company pay 11-13% for capital?
The companies issuing variable rate preferred stocks today are bitcoin treasury companies. Their business model revolves around accumulating bitcoin on their balance sheet, and they need capital to buy more. Issuing preferred stock is one way to raise that capital without diluting common stockholders as much as a direct equity offering would.
These companies are willing to pay 11-13% because they believe bitcoin will appreciate faster than the cost of the dividend. If bitcoin rises 30% in a year, paying 12% to shareholders to fund that purchase is a profitable trade. The risk, of course, is that bitcoin does not always go up, and a prolonged decline could strain the issuer's ability to maintain payments.
The preferred shares are sold through at-the-market (ATM) offering programs. When the share price is above $100 par, the issuer continuously sells new shares into market demand. This serves two purposes: it raises fresh capital to buy more bitcoin, and it creates sell pressure that keeps the share price from running too far above par. The ATM program is the supply-side complement to the rate adjustment mechanism. Together, they keep the price stable while steadily growing the issuer's bitcoin treasury.
This is a fundamentally different model than a bank paying 4% on a savings account. The yield is higher because the underlying business carries more risk. Understanding the issuer's strategy and balance sheet is essential before investing.
For the complete breakdown of how the ATM program works, see our ATM program deep dive.
Works when BTC growth > dividend rate
Works when BTC growth > dividend rate
The Risks
What can go wrong
Variable rate preferred stocks are not risk-free. They offer higher yields precisely because they carry risks that savings accounts and treasury bonds do not. Before investing, you should understand these risks at the category level, not just for a specific ticker.
Every variable rate preferred stock depends on the issuer's ability to keep paying. The variable rate mechanism helps with price stability, but it does not protect you from credit risk, liquidity risk, or the underlying business model failing. Here are the key risks to evaluate.
Risk factors
Bitcoin dependence
Dividend funded by BTC-backed treasury
No principal guarantee
Share price can trade below $100 par
Issuer discretion
Rate set by board, not a formula
Concentration risk
Single company, single asset class
Novel instrument
Less than one year of market history
Tax Treatment
Return of capital: the tax advantage most people miss
Many variable rate preferred stock dividends are classified as return of capital (ROC) rather than ordinary income. This distinction has a significant impact on your after-tax returns. When a dividend is classified as ROC, you owe no federal income tax on it in the year you receive it.
Instead, the ROC payment reduces your cost basis in the shares. If you bought at $100 and received $10 in ROC dividends over the year, your cost basis drops to $90. You do not owe taxes until you sell the shares, and when you do, the gain is typically taxed at the lower long-term capital gains rate if you held for more than a year.
This creates a powerful tax deferral. You receive cash now but defer the tax liability into the future. If you hold for decades, you are effectively getting an interest-free loan from the government on the deferred taxes.
There is an additional benefit for estate planning. If you hold shares until death, your heirs receive a stepped-up cost basis, meaning the deferred taxes may never be paid at all. Consult a tax professional for guidance specific to your situation.
High-Yield Savings Account
Tax owed every year
STRC (Return of Capital)
Tax deferred until sale
What To Look For
How to evaluate a variable rate preferred stock
Not all variable rate preferred stocks are created equal. The structure may be similar, but the underlying issuer, balance sheet strength, and track record vary. Here is a checklist of what to examine before putting money to work.
Balance sheet strength
BTC holdings, cash reserves, and total debt levels
Price tracking
Does the share consistently trade near $100 par value?
Trading volume
Average daily volume determines how easily you can buy and sell
Dividend track record
How many consecutive months has the dividend been paid?
Reserve coverage
How many months of dividend payments are pre-funded?
Tax treatment
Return of capital vs ordinary income classification
Issuer transparency
Regular SEC filings, public rate announcements, accessible data
This guide is for educational purposes only and does not constitute investment advice. All investment decisions should be based on your own research and consultation with a qualified financial advisor. STRC and SATA are preferred stocks, not savings accounts. Your principal is not guaranteed. Dividend rates are variable and not guaranteed.