Preferred Stock in 13F Filings: How to Read It

Most people reading a 13F filing assume every line is a stake in a company's common stock — the ordinary shares that trade on an exchange and rise and fall with the business. But institutional portfolios also hold a quieter instrument that sometimes appears in the same filing, listed separately and behaving very differently: preferred stock. Knowing how to spot it changes what a holding actually tells you.

What preferred stock is

Preferred stock is a hybrid security that sits between a bond and a common share. Like a bond, it typically pays a fixed dividend on a set schedule and ranks ahead of common stock if the company is liquidated — preferred holders get paid before common holders. Like a share, it has no maturity date and represents ownership rather than a loan. The trade-off is that preferred stock usually carries little or no voting power and limited upside: its price is driven more by interest rates and the issuer's creditworthiness than by the company's growth.

In plain terms, common stock is a bet on a business getting bigger; preferred stock is closer to a bet on a business staying solvent and paying its dividend. A fund that owns a company's preferred is making a fundamentally different wager than one that owns its common.

Which preferred stock appears in a 13F

This is where it gets specific. A 13F only has to report what the SEC calls Section 13(f) securities — the instruments on an official list the SEC publishes and updates quarterly. Publicly traded preferred stock that appears on that list is reportable, and when a fund holds it, it shows up as its own line with its own identifier, separate from the same company's common shares.

Privately negotiated preferred stock is a different story. When Berkshire Hathaway structured its large bespoke preferred investments — the kind it has used in deals with companies like Occidental Petroleum and, during the 2008 crisis, major banks — those securities were custom instruments that do not trade on an exchange. Because they are not publicly traded 13(f) securities, they generally do not appear in the 13F at all. This is one reason a fund's reported 13F value can understate its true economic exposure: a multibillion-dollar preferred stake can be completely invisible.

How to spot preferred stock in a filing

The clearest tell is the security identifier. Common and preferred shares of the same company carry different CUSIP numbers, so on a holdings page they appear as two distinct rows even though they share an issuer name. The description often signals it too — look for words like "preferred," "PFD," a series letter (Series A, Series B), or a stated dividend rate baked into the name. If you see the same company listed twice with different identifiers, one of those lines may well be preferred.

It is the same principle that makes dual-class common stock — like the A and B shares you see in filings for companies such as Berkshire Hathaway — show up as separate rows. Different class, different identifier, different line. Preferred stock simply takes that idea one step further, because the economics diverge much more sharply from the common.

Why it matters for reading a fund

Treating a preferred position as if it were a common-stock conviction call is a misread. A fund that loads up on bank preferreds from issuers like JPMorgan or Wells Fargo is usually reaching for steady, bond-like income, not making a bullish call on the banks' growth. An income-oriented or insurance-affiliated manager may hold a sleeve of preferreds for yield while expressing its actual equity views entirely through common stock elsewhere in the book.

So when you study a manager like Tweedy, Browne or any value-oriented filer, separate the two in your head. Common positions tell you where the manager sees upside; preferred positions tell you where it wants income and safety. Lumping them together blurs the very signal you came to the filing for.

The bottom line

Preferred stock is a small but meaningful part of the 13F picture. Publicly traded preferred shows up as its own line with its own CUSIP and should be read as an income or capital-structure position, not a growth bet. Privately negotiated preferred — including some of the largest stakes Berkshire and others hold — does not show up at all, which is a useful reminder that a 13F captures publicly traded equity, not a fund's entire portfolio. When you browse institutional filings on 13F Insight, a second line under a familiar company name is your cue to check which kind of security you are actually looking at.

FAQ

What is preferred stock?

Preferred stock is a hybrid security between a bond and a common share. It usually pays a fixed dividend, ranks ahead of common stock in a liquidation, and carries little or no voting power. Its price is driven mainly by interest rates and credit quality rather than the company's growth.

Does preferred stock appear in 13F filings?

Publicly traded preferred stock that is on the SEC's official list of Section 13(f) securities is reportable and appears as its own line, separate from the company's common shares. Privately negotiated or non-traded preferred stock generally is not a 13(f) security and does not appear.

How can I tell preferred stock from common in a filing?

Look at the identifier. Common and preferred shares of the same company have different CUSIP numbers, so they show up as separate rows under the same issuer name. The description may also include "preferred," "PFD," a series letter, or a stated dividend rate.

Why doesn't Berkshire Hathaway's preferred stock show up in its 13F?

Berkshire's large preferred investments are typically custom, privately negotiated instruments that do not trade on an exchange. Because they are not publicly traded Section 13(f) securities, they fall outside 13F reporting, even when they represent billions of dollars of exposure.

Why does it matter whether a holding is preferred or common?

They represent different bets. Common stock is a bet on a company's growth; preferred stock is an income and capital-structure position closer to a bond. Reading a preferred stake as a bullish equity conviction call misinterprets what the manager is actually doing.

Is preferred stock riskier than common stock?

It is generally lower-risk in a downturn because preferred holders are paid before common holders and receive a fixed dividend, but it also has limited upside. Its main risks are rising interest rates, which push preferred prices down, and the issuer's ability to keep paying the dividend.