Security

A Security is a Financial Instrument that:

1. 1)Represents a claim - on ownership (equity), on debt repayment (a bond), or on the right to transact at a certain price (options)
2. 2)Is tradeable - it can be bought, sold, or transferred between parties
3. 3)Is regulated - governments define what counts as a Security because securities involve risk to the Buyer

The word covers a broad range of instruments. When someone says 'security,' they might mean:

• •Equity securities - shares of a company, representing partial ownership and a claim on future Profit
• •Debt securities - bonds or notes, representing a loan where the issuer owes you principal balance plus interest rate payments
• •Derivative securities - options or similar contracts whose value is derived from some other Asset

All of these are Assets in the sense you already learned - they hold future economic value. But not all Assets are securities. Your office furniture is an Asset. It is not a Security. The distinction: a Security is a financial claim, structured to be transferable, and subject to regulation.

One critical nuance for Operators at PE-Backed companies: the equity in your company is a Security even though there is no open market to trade it. These shares are illiquid assets - they exist, they have implied value, but you cannot convert them to cash whenever you want.

Securities affect you as an Operator in three ways.

Your Equity Compensation - shares, options - is a Security. At a PE-Backed company, this equity is an illiquid asset: no open market, no guaranteed path to cash. Understanding what you hold determines whether you can estimate its value and plan around its Liquidity constraints.

The mix of equity and debt your company has issued defines its Capital Structure. More debt means higher Fixed Obligations, less predictable Cash Flow available for Operations, and a higher Hurdle Rate your projects must clear.

Outside of work, your Investment Portfolio - index funds, bonds, Retirement Accounts - is built from securities. Knowing what they are is the foundation for every Returns, Volatility, and Risk Tolerance conversation with a Financial Planner or Registered Investment Advisor.

How securities get created

A company creates equity securities by issuing shares. It creates debt securities by issuing bonds or notes. In both cases, the company receives Capital Investment in exchange for a claim it gives to the Buyer.

Think of it mechanically:

• •Company needs $10M to fund Operations
• •Path A (equity): Issue 1,000,000 shares at $10 each. Buyers now own a fraction of the company. No Guaranteed Return - they participate in upside and downside.
• •Path B (debt): Issue $10M in bonds at a 6% interest rate. Buyers are owed their principal balance back plus interest. Their claims get paid before equity holders if the company cannot meet all its obligations.

The company's Balance Sheet records the result: equity shows up under ownership, debt shows up under liabilities.

How securities get valued

A Security's market value comes from what Buyers will pay for the expected future Cash Flow it represents. For equity, that is the Discounted Cash Flow of expected future Profit. For debt, it is the present value of the promised interest and principal payments.

This is why Valuation and Security pricing are deeply linked. When someone says your company has an Enterprise Value of $200M, they mean the total value of all claims - debt plus equity - is $200M based on expected future performance. To find equity value, subtract net debt (total debt minus cash on the Balance Sheet): Enterprise Value = equity value + net debt. Getting this subtraction right matters. If the company just raised Capital, it has cash, and ignoring that cash overstates net debt and understates equity value.

The order of claims at PE-Backed companies

Not all equity claims are equal. At PE-Backed companies, equity has layers:

• •Debt claims get paid first. If the company is sold, debt holders receive their principal balance before any equity holder sees a dollar.
• •The PE firm's equity typically carries priority claims: a contractual right to recoup their invested Capital before remaining value flows to other shareholders. The PE firm invested at a specific price, and their deal ensures they get that amount back first.
• •Your shares sit at the bottom. You participate in equity value only after debt and the PE firm's priority claims are satisfied.

This structure means the implied per-share price (total equity divided by total shares) overstates what your shares are actually worth - especially in flat or down scenarios where the priority claims absorb most or all of the equity value.

How securities get traded

Securities traded on open markets go through Broker-Dealers who match Buyers and sellers. You submit trading orders (buy 100 shares at market price, or set a limit at $45), and the market matches you.

Securities at PE-Backed companies do not trade on open markets. Transactions happen through negotiated deals, often with lockup periods and restrictions on transfer. This is why PE equity is an illiquid asset.

Regulation

Governments regulate securities because issuers typically know more about the risks than Buyers do. Regulations exist to ensure Buyers receive enough information to assess what they are purchasing. This is why issuing and selling securities requires Compliance Risk management, and why only licensed professionals (a Registered Investment Advisor or CFA) should give personalized advice on buying, selling, or holding specific securities.

Use this concept when:

• •Evaluating a job offer with Equity Compensation - you need to know what type of Security you are receiving (shares, options), whether it has Liquidity, and how the order of claims at your PE-Backed company affects what your shares are actually worth
• •Understanding your company's fundraising - whether the company issues equity or debt changes the Capital Structure and affects your operating constraints
• •Building your personal Investment Portfolio - every Asset Class (stocks, bonds, alternative investments) is a collection of securities with different Return Distribution profiles, Volatility, and Liquidity
• •Reading Financial Statements - securities appear on the Balance Sheet as assets (securities you own) or as liabilities and equity (securities you have issued)

Don't confuse it with:

• •Asset more broadly - all securities are Assets, but not all Assets are securities. A patent is an Asset. A building is an Asset. Neither is a Security.
• •Financial product more broadly - an insurance policy is a financial product but typically not a Security. A savings account is a financial product but not a Security. The boundary is about transferability and risk to the Buyer.
• •'Security' as in cybersecurity - completely different domain, same English word.

Security builds on Asset - it is the specific type of Asset that represents a financial claim, is structured for transfer, and carries regulatory requirements. It opens three paths forward: Asset Class (equity, debt, and alternative investments are categories of securities with distinct Returns and Volatility profiles), Capital Structure (how the mix of securities a company issues determines the order of claims on Enterprise Value and your operating constraints), and Equity Compensation (the securities you receive as part of Total Compensation, where the order of claims makes value estimation non-trivial). The concept connects to Expected Value: because your Returns from a Security depend on uncertain future outcomes - and the order of claims makes those Returns asymmetric - probability-weighted scenarios are the only honest way to estimate what illiquid equity is worth. For Operators, the practical bridge runs through Leverage and EBITDA Optimization: debt securities above your equity set the Cash Flow floor your P&L must clear.