MONK MODE
I'm a teacher at heart. Most people who borrow against their portfolio were never taught how the loan actually works, and the people who sold it to them had no reason to explain. Monk Mode is the explanation.
Know what you own. Know what it costs you.
A free intelligence layer for self-directed investors who want to understand leverage, risk, and the mechanics of borrowed money — before it moves against them.
Dhruv (DROOV — rhymes with "groove")
Try Monk Mode FreeRead the lessons: 25 tracks on leverage, the line, and borrowed money →
Open the interactive simulators and explainers — Greeks, Black-Scholes, 0DTE odds →
No account required to explore. Educational only. No investment advice.
Monk Score™
A 0–1,000 behavioral risk score built on how you actually trade — not what you say you'd do.
Leverage Simulator
See exactly how decay, volatility, and drawdown compound across your positions over time.
Roast Engine
Your portfolio read through ten well-known investing philosophies. Direct feedback, in plain language. Educational only.
A WORKED EXAMPLE
See it happen
A retired teacher, a $200,000 line, and the week the market fell.
Move the slider to change how far the market falls. Everything else is fixed. The figures are the lender's arithmetic, worked in the open.
Collateral
$300,000
Loan-to-value
66.67%
Room left
3.33 pts
The line is inside its maintenance requirement. The call fires once loan-to-value passes 70.00%, which happens at a 28.57% drawdown.
Every dollar she sells also removes a dollar of collateral, which is why curing a $4,000 shortfall takes a $13,333 sale.
Illustrative example. Educational only.
At any drawdown
The line
She taught for thirty-one years in Ohio. When she retired, her savings sat in one brokerage account, and the firm holding it offered her a line of credit secured against the account. She borrowed $200,000 against a $400,000 portfolio. She sold nothing, so she owed no tax on the gain. The line is a demand loan. The portfolio is pledged against it, and the lender can require repayment at any time.
From a 10% drawdown
The market falls
Nothing about the loan changes when the market falls. The balance is still $200,000. What changes is the collateral standing behind it. Each day the lender divides the balance by the value of the account and calls the result the loan-to-value. Her agreement sets the maintenance line at 70 percent. She was never shown the daily number.
From a 28.57% drawdown
The call
Once loan-to-value crosses 70 percent, the lender can require her to post more collateral or pay the line down. Typically there is a short window to do that. The right to sell the pledged securities straight away, without contacting her, is written into the agreement, and it is the right that gets used when markets move quickly.
From a 40% drawdown
The sale
She made no decision. The market had a bad month and the call arrived. There was no cash to post, and nobody was watching the line on her behalf. The lender sold from the pledged account to restore its cover. The shares went into the same falling market that produced the shortfall, and the sale realised the gains she had borrowed against the account to avoid realising.
The lender recomputes this distance every day and does not publish it. Dhruv Intelligence verifies each monthly statement line by line and carries an estimated daily cushion in between, so the borrower has a number of their own.
Fixed for this example: a $400,000 pledged portfolio, a $200,000 balance, and a 70.00% maintenance rate. No firm, bank, adviser or security is named, and no real account is described.
The ratio is 3.33 at four hundred thousand and 3.33 at forty million. At five million it is the difference between a phone call and a forced sale. If that is closer to your situation, the homepage calculator shows the same drop across three kinds of portfolio.
“Credit is the most important part of the economy—and probably the least understood. It's the biggest and most volatile part.”
WHAT IS INVESTING FOR?
Preserve first. Then grow.
Credit can speed up either one. It can also undo both. Before the modules, hear why the goal was never to get rich.
"Investing is about preserving and growing wealth. It's not about getting rich."
THE CURRICULUM
Take the risk you can measure.
600 lessons in five blocks, from what a maintenance rate is to how to recompute a fictional statement by hand. Free, no account, nothing sent anywhere. Your place is remembered in this browser only.
600 lessons
Block 1
Instruments
What collateral, options, prices, tails and the line itself are. The hundred that were already here, unchanged.
Track 1
Foundations of borrowing against assets
What collateral is, what an advance rate does, and why a one dollar shortfall does not take one dollar to fix. Start here if a maintenance rate is a new phrase.
20 lessons
Start track →
Track 2
Options mechanics
Rights, obligations, strikes, expiries and assignment. The plumbing of a contract, before any pricing model appears.
20 lessons
Start track →
Track 3
Pricing and the Greeks
Why an option costs anything before expiry, what the five inputs do, and what delta, gamma, theta, vega and rho each measure. Every example computed from one stated base case.
20 lessons
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Track 4
Probability, tails and simulation
Distributions, fat tails, drawdown, Monte Carlo and path dependency. Why the order of returns is irrelevant without leverage and decisive with it.
20 lessons
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Track 5
The securities-backed line itself
The eight terms that move without you, one lesson each, then how a reset appears on a statement, how to recompute an interest leg by hand, and what to ask your own lender.
20 lessons
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Block 2
The borrower and the lender
Why the same person borrows twice, why one name is not forty names, how the other side of the table decides, what a call actually does, where tax sits, and the public sequences.
Track 6
Behaviour under leverage
Why the same capable person borrows against a concentrated position twice. Anchoring, unrealised gains treated as spent, and what changes in a judgment between the month a line opens and the month it is called.
25 lessons
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Track 7
Concentration and hedging
Why one name and forty names are not the same collateral, why a haircut widens with size, and what a put, a collar, a prepaid variable forward and an exchange fund each do to the number the lender computes.
25 lessons
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Track 8
How lenders decide
The arithmetic on the other side of the table. Advance-rate schedules, concentration limits, reclassification, what discretion means in the agreement, and how a rate moves without notice.
25 lessons
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Track 9
Margin call mechanics
What happens, in what order, on what clock, and who decides. How a shortfall is computed, whether a cure window exists, what the lender may sell and in what order, and why curing by sale shrinks both sides of the ratio at once.
25 lessons
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Track 10
Tax and structure
Why borrowing is not a disposal, what a sale does to basis, how interest treatment is limited, the change in basis at death, and trust and entity mechanics. Rules described, never applied to anyone: treatment depends on circumstances and belongs with your own adviser.
25 lessons
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Track 11
Deleveraging case histories
Twenty-four public, widely reported episodes between 1993 and 2022. What the position was, what moved, what the sequence was, what the outcome was. The lesson in each is the sequence, not the villain.
25 lessons
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Block 3
Regimes
What the outside world does to collateral, whatever the borrower does: rates, credit, correlation, volatility, and tails.
Track 12
Rates and the policy cycle
How a policy rate reaches a borrowing cost, what a spread is, what a floating rate does month to month, and why a variable rate can move without a matching change in stated capacity.
25 lessons
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Track 13
Credit cycles and liquidity
How credit conditions tighten, what happens to funding, and why lenders get more conservative at exactly the wrong moment for a borrower.
25 lessons
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Track 14
Correlation and diversification
Why diversification is measured in correlation rather than in count, and why correlations converge in a drawdown so a portfolio that looked diversified in calm markets stops being diversified when it matters.
25 lessons
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Track 15
Volatility
Clustering, why quiet periods precede violent ones, realised against implied, and what a volatility spike does to a haircut.
25 lessons
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Track 16
Tails and modelling
Why normal distributions understate extremes, what a fat tail is in arithmetic, what a Monte Carlo simulation does and cannot tell you, and the difference between a risk that is priced and a risk that is not.
25 lessons
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Block 4
Your own book
How to read the documents a lender produces, taught on one fictional Halden & Wren statement. Nothing here asks for a real holding.
Track 17
Reading a statement
What each section of a facility statement is, where the terms live, how to find the index and the spread, what an interest leg is, and how to locate the maintenance threshold — taught on a supplied fictional Halden & Wren page.
25 lessons
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Track 18
Reconstructing the arithmetic
Recompute a month of interest by hand, leg by leg, day count, balance and rate, and check the result against the printed figure.
25 lessons
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Track 19
Finding real advance rates
How per-position advance rates are derived, why the blended number hides the concentrated one, and how to build the schedule from the documents.
25 lessons
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Track 20
Stressing a position
Apply a drawdown, apply a haircut, apply both, compute headroom, compute the shortfall, and compute how much must be sold to cure.
25 lessons
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Track 21
Knowing your number
What to compute monthly, what to watch between statements, and what a gap in statements means — still on the same fictional facility.
25 lessons
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Block 5
Everyday debt
The same mechanisms on a car and a house. Start here if a pledged portfolio is not yet the loan you have.
Track 22
Car loans
Price against payment, term against total interest, depreciation against amortization, and what repossession actually does. The everyday version of a line against an asset that moves.
25 lessons
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Track 23
Mortgages
PITI, fixed against adjustable, points, escrow, and a foreclosure clock measured in months. The house as collateral you still live in.
25 lessons
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Track 24
Everyday credit
Cards, stacked instalments, plan loans, and a savings buffer measured in months of payments. Capacity as a month rather than as a portfolio.
25 lessons
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Track 25
When payments slip
The delinquency clock, charge-offs, why a car is taken in weeks and a house in months, and six public episodes. Capacity, a line and a clock, on the loans already running.
25 lessons
Start track →
Every lesson explains a mechanism. None of them tells you what to do with your money. There is no account, no email, and no record of your answers anywhere but this browser.
Educational only. Nothing here is investment, legal or tax advice, or a recommendation to enter into any transaction. Take the risk you can measure.
MARKET TRUTHS
The discipline underneath the punch.
Short, original lessons on leverage, timing, and survival — the principles that keep self-directed investors in the game. Pick a theme, share what lands, and come back for a new set.
The clock you watch is not the clock that matters.
The market moves every second. Your statement updates once a month. The gap between those two clocks is where surprises live.
By the time bad news reaches your inbox, it has already been true for weeks.
A monthly statement is a photograph of a moving river — useful, but never current.
Risk does not wait for your billing cycle.
The most expensive number is the one you find out about late.
Your portfolio can cross a line on Tuesday and tell you about it on the first of next month.
100 truths across 5 themes · free and educational, not investment advice
WHAT IS MONK MODE
Most retail investors using 3x ETFs, margin, or options have never seen what decay, leverage drag, and forced liquidation actually look like on their own positions. Monk Mode changes that. It is a free, educational intelligence tool that shows you the mechanics of leveraged instruments in plain language — so you can make decisions with your eyes open.