Q3 2026 Just Ended: Your 13F Watchlist Before the November Filings

The third quarter closed yesterday, which means the clock has started on the next round of SEC 13F filings. Institutional managers have 45 days after quarter-end to report, so the bulk of Q3 2026 filings will land around mid-November. Nothing is public yet, but that is exactly why now is a useful time to build a watchlist rather than react to headlines later.

What the last round already told us

The Q2 2026 filings gave investors a few clear storylines. Berkshire Hathaway's Alphabet position grew by roughly $17 billion, making it one of the biggest single-quarter moves of the season. Roundups of the filings, such as this Q2 13F recap, also flagged Druckenmiller's unconventional new picks in crypto-linked names. You can browse each manager's latest holdings on our investors page.

The point of a watchlist is to ask a better question than "what did they buy?" The better question is: "did the behavior continue, reverse, or spread to other funds?"

Five things to check when Q3 filings arrive

1. Did the Alphabet buying continue? A single big quarter can be an anomaly. Two consecutive quarters of adds is a conviction signal. Check whether other high-profile funds followed, using the overlap tool to see how many top managers now hold the same name.

2. Did crowded trades get more crowded or less? When many funds own the same stock, small shifts in sentiment can cause outsized price moves. Compare the number of holders quarter over quarter. Rising holder counts after a rally can mean late-stage crowding; falling counts can mean smart money is quietly leaving.

3. Where did the money flow by sector? Net buying and selling by sector is often more informative than any single stock. The flow page summarizes the direction of institutional capital, and it is worth comparing against the prior quarter to catch rotations early.

4. What do macro-minded funds agree on? Managers like Bridgewater and Soros tend to express views about rates, growth, and inflation through their equity and ETF holdings. Where several of them line up, our macro consensus page can highlight the shared theme.

5. Which positions are brand new? New positions are the cleanest signal in a 13F, because they represent a fresh decision rather than drift from market moves. Trims and adds are harder to interpret, since price changes alter portfolio weights even if share counts stay the same.

Know the limits before you act

A 13F is a snapshot of long US equity positions as of one date. It does not show short positions, most non-US holdings, or what a fund did in the six weeks between quarter-end and filing. By the time the filings appear, a manager may have already reversed course. That delay is why 13F data works best as a research starting point and a way to spot consensus, not as a trading signal on its own.

It also helps to separate manager types. A concentrated, long-horizon investor's new position tells you something very different from a high-turnover quant fund's, whose quarterly snapshot may be mostly noise. Weigh the signal by the style of the filer.

A simple preparation routine

Before November, take thirty minutes to do three things. First, list the five or six managers whose approach you respect most and note their top ten holdings today. Second, write down one question for each, such as "will they keep adding?" or "will they exit the crowded AI trade?" Third, bookmark the pages you will use to compare quarters. When the filings drop, you will be comparing against a baseline rather than starting from scratch.

The managers with the largest portfolios and the longest holding periods tend to file closer to the deadline, so expect the most-watched names in the days just before the November cutoff. Patience pays here: the full picture only emerges once most filings are in.

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Data sourced from public SEC 13F filings. Educational research only — not investment advice.