On a stock or bond, “Not Rated” (often shown as NR) means no recognized rating agency or covering analyst has an active opinion on the security. Sometimes that’s because no one ever issued one; sometimes an earlier rating was pulled. What “Not Rated” means for stocks and bonds depends heavily on which of those two situations you’re looking at, and on whether the security is equity or debt. For stocks, NR is usually procedural and harmless. For bonds, it changes the price you pay, the yield you receive, and who else is allowed to buy alongside you.
What NR Means on a Stock
When you see NR next to a stock on a brokerage research page, the most likely explanation is that the firm’s analyst hasn’t published a recommendation yet. It rarely says anything about the company itself.
Quiet Periods After an Offering
If a brokerage helped underwrite an IPO, FINRA Rule 2241 prevents that firm from publishing research or having its analysts speak publicly about the issuer for at least 10 days after the IPO. For secondary offerings where the firm served as manager or co-manager, the blackout runs at least three days. During those windows, the stock sits as NR on that firm’s platform. Emerging Growth Companies are an exception, and the quiet period does not apply to them.1FINRA. FINRA Rule 2241 – Research Analysts and Research Reports
Analyst Turnover and Corporate Events
When the analyst who covered a sector leaves, every stock in that coverage list can flip to NR while the replacement rebuilds the models. That gap often runs several weeks. A pending merger, spin-off, or major restructuring can also cause a firm to suspend its rating rather than leave a stale Buy or Sell in place while the facts are moving.
The practical read for an individual investor: check whether other firms cover the stock. A company rated Buy at three shops and NR at a fourth has simply not been picked up by that fourth research team yet.
What NR Means on a Bond
On a bond, NR carries more weight. It tells you no Nationally Recognized Statistical Rating Organization has issued a live opinion on the credit, and you are being asked to lend money without that third-party assessment.
The Issuer Chose Not to Pay
Credit ratings run on an issuer-pays model. S&P’s published fee schedule for municipal bonds ranges from roughly $7,500 for simple, small issues to nearly $500,000 for large, complex transactions. For a small town floating a modest bond, that expense can outweigh the interest savings a rating would produce. Plenty of unrated municipal bonds come from small towns and special districts with stable tax bases; the absence of a rating just means nobody paid for a formal opinion.
The Agency Couldn’t Rate It
Sometimes an agency declines to issue or maintain a rating because the issuer will not or cannot provide the financial information needed to support one. Bankruptcy proceedings, major mergers, and rapid changes to a company’s debt structure all create information gaps that push agencies toward NR rather than publish a grade they can’t defend.
Private Placements to Big Buyers
A large share of unrated corporate debt trades through Rule 144A private placements, where issuers sell directly to Qualified Institutional Buyers. The SEC defines QIBs as institutions owning and investing large amounts of securities, with thresholds ranging from $10 million to $100 million depending on the entity type.2Securities and Exchange Commission. Defining the Term Qualified Purchaser Under the Securities Act of 1933 Those buyers do their own credit work, so a public rating adds cost without adding much benefit. The catch is liquidity: 144A bonds can only be resold to other QIBs, which keeps the secondary market small.
Never Rated vs. Rating Withdrawn
NR covers two situations that look identical on a screen but mean very different things. The security was never rated, or a rating that once existed has been pulled. S&P notes that ratings “may be changed, suspended, or withdrawn at any time” and lists triggers including mandatory conversion of a security into equity, a permanent write-down to zero, or the agency lacking sufficient information to maintain its opinion.3S&P Global Ratings. S&P Global Ratings Definitions
A bond that was never rated may just reflect an issuer who skipped the fee. A bond that used to carry an A rating and now shows NR is a different story. Find out why the rating was withdrawn before doing anything else. The reason for the withdrawal usually tells you more than the label itself.
The Price of Being Unrated
Unrated bonds pay more, and the market data is fairly clean on this point.
An FDIC study of municipal bonds issued between 1998 and 2017 found that forgoing a rating increased offering yields by approximately 47 basis points on revenue bonds and 49 basis points on general obligation bonds.4FDIC. Do Municipalities Pay More to Issue Unrated Bonds On a $100,000 position, that’s roughly $500 a year in extra income. It compensates you for the added uncertainty and the smaller pool of buyers if you decide to sell.
Default data reinforces the reason for the premium. Moody’s research covering municipal defaults from 1970 through 2000 found investment-grade rated issuers defaulted at an average annual rate of just 0.0005%. Over a similar window, external data identified more than 1,300 defaults among unrated municipal bonds, against only 18 among Moody’s-rated issuers.5Moody’s Investors Service. Moody’s US Municipal Bond Rating Scale Moody’s noted a self-selection effect: weaker issuers are less likely to pay for a rating in the first place, so the unrated pool contains a heavier concentration of shaky credits. That doesn’t make every unrated bond dangerous. It does mean the average unrated bond is riskier than the average rated one.
Why Some Big Buyers Can’t Touch Unrated Bonds
The buyer pool for unrated debt is thinner than for rated debt, and that’s part of what drives the yield premium.
Insurance companies operate under the NAIC’s risk-based capital framework, which assigns each bond a designation from NAIC 1 through NAIC 6. Unrated securities that have not been filed with the NAIC’s Securities Valuation Office for analysis are generally assigned the worst designation, which carries a capital charge of up to 30% on a pre-tax basis.6NAIC. Purposes and Procedures Manual of the NAIC Investment Analysis Office That effectively prices unrated bonds out of insurance portfolios in any meaningful size.
Many pension funds are limited by statute or investment policy to securities rated in the top quality categories by a recognized agency, with unrated bonds either barred entirely or capped at a small share of plan assets. Mutual funds face a similar constraint through their prospectus language: a fund that promises to hold only investment-grade securities cannot hold unrated debt regardless of what the credit analyst thinks of it.
How to Decide Whether an Unrated Security Is Worth It
For a stock, NR usually needs no action beyond checking whether other analysts cover the name.
For a bond, the question worth answering before you invest is which kind of NR you’re looking at. Did the issuer choose not to pay for a rating, or did an agency decline to give one? If a rating existed and was withdrawn, why? At minimum, review the issuer’s audited financial statements, debt service coverage ratios, and revenue trends. If those documents aren’t publicly available, that silence tells you something too. The extra yield on an unrated bond is real, but it’s only worth taking if the risk you’re being paid for is uncertainty about a solid credit, not the absence of anyone willing to grade a weak one.