What Is a 13F Filing? Definition and Example
Who files a 13F, what it shows, the 45-day lag, and the limits that matter before you copy a famous investor’s portfolio.
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Which Stocks Are Institutions Buying? 13F Ownership Changes, Q2 2026
In Q2 2026, MaxLinear (MXL) gained the most institutional holders in relative terms and Honeywell International (HON) lost the most. The biggest adds and cuts by 13F filers, the most widely held stocks, and what the filings leave out.
Key takeaways
- In Q2 2026 (the quarter ended Jun 30, 2026), MaxLinear (MXL) added the most institutional holders in relative terms among 997 US stocks in Exent’s coverage: the number of 13F filers holding it rose 91.3%, from 241 to 461.
- The most widely held stock at Jun 30, 2026 was Microsoft (MSFT), held by 6,597 institutions filing 13F reports, followed by Amazon.com (AMZN) with 6,497 and Apple (AAPL) with 6,481.
- The biggest exit in Q2 2026: Honeywell International (HON) lost 22.7% of its 13F holders, from 2,895 to 2,237, as 782 institutions closed their positions.
- 16 of the 20 stocks that gained the most institutional holders in Q2 2026 were Technology stocks; the biggest gain in number was at Intel (INTC), +1,023 holders.
- 13F data arrives late: reports for the quarter ended Jun 30, 2026 were due by Aug 14, 2026, so the positions shown can be up to four and a half months old by the time the next quarter’s reports land.
Which stocks are institutions buying?
In Q2 2026 (the quarter ended Jun 30, 2026), MaxLinear (MXL) added the most institutional holders in relative terms among 997 US stocks in Exent’s coverage: the number of 13F filers holding it rose 91.3%, from 241 to 461. 237 institutions opened a new position. The stocks that gained the most 13F holders, as a share of the holders they had a quarter earlier:
| Stock | 13F holders | Change in the quarter | New positions |
|---|---|---|---|
| MaxLinear (MXL) | 461 | +91.3% (+220) | 237 |
| Vishay Intertechnology (VSH) | 494 | +57.8% (+181) | 200 |
| Sezzle (SEZL) | 352 | +49.8% (+117) | 135 |
| Definium Therapeutics (DFTX) | 389 | +49.0% (+128) | 154 |
| Ouster (OUST) | 354 | +45.1% (+110) | 141 |
| Marvell Technology (MRVL) | 2,371 | +44.5% (+730) | 810 |
| Flex (FLEX) | 1,165 | +42.2% (+346) | 396 |
| Vicor (VICR) | 540 | +38.8% (+151) | 190 |
| Intel (INTC) | 3,788 | +37.0% (+1,023) | 1,132 |
| Veeco Instruments (VECO) | 336 | +36.0% (+89) | 114 |
| Cohu (COHU) | 363 | +34.4% (+93) | 113 |
| SiTime (SITM) | 591 | +33.7% (+149) | 181 |
| Ultra Clean Holdings (UCTT) | 461 | +33.6% (+116) | 147 |
| Semtech (SMTC) | 615 | +33.4% (+154) | 201 |
| Revolution Medicines (RVMD) | 738 | +32.0% (+179) | 248 |
Of the 20 biggest gainers, 16 are Technology stocks. In absolute numbers the biggest gain among them was at Intel (INTC), +1,023 holders to 3,788. A percentage change favours stocks that started with fewer holders, and a holder count treats a small adviser the same as a giant fund, so a rising count shows breadth of interest, not the size of the money.
Which stocks are institutions selling?
The biggest exit in Q2 2026: Honeywell International (HON) lost 22.7% of its 13F holders, from 2,895 to 2,237, as 782 institutions closed their positions. The largest drop in number was at Exxon Mobil (XOM), −940 holders.
| Stock | 13F holders | Change in the quarter | Closed positions |
|---|---|---|---|
| Honeywell International (HON) | 2,237 | −22.7% (−658) | 782 |
| Exxon Mobil (XOM) | 4,004 | −19.0% (−940) | 1,069 |
| Fastly (FSLY) | 320 | −14.9% (−56) | 112 |
| Zillow Group (Z) | 457 | −14.1% (−75) | 139 |
| Leidos Holdings (LDOS) | 800 | −13.4% (−124) | 207 |
| Chewy (CHWY) | 560 | −13.3% (−86) | 159 |
| Intuit (INTU) | 1,850 | −12.6% (−267) | 459 |
| Trade Desk (TTD) | 752 | −11.8% (−101) | 205 |
| Equitable Holdings (EQH) | 490 | −11.4% (−63) | 129 |
| Boston Scientific (BSX) | 1,580 | −10.8% (−191) | 346 |
| Zoetis (ZTS) | 1,493 | −10.6% (−177) | 352 |
| HubSpot (HUBS) | 638 | −10.6% (−76) | 186 |
| Kratos Defense & Security Solutions (KTOS) | 676 | −10.3% (−78) | 194 |
| InterDigital (IDCC) | 537 | −9.9% (−59) | 115 |
| AT&T (T) | 2,788 | −9.5% (−293) | 453 |
Of the 20 biggest decliners, 9 are Technology stocks. A falling holder count does not always mean funds turned negative: index changes, spin-offs, mergers and funds that stop filing also remove holders.
Which stocks do the most institutions own?
The most widely held stock at Jun 30, 2026 was Microsoft (MSFT), held by 6,597 institutions filing 13F reports, followed by Amazon.com (AMZN) with 6,497 and Apple (AAPL) with 6,481. 16 of these 20 gained holders in Q2 2026, led by Advanced Micro Devices (AMD) with +838.
6,59713F holders: Microsoft (MSFT)
6,49713F holders: Amazon.com (AMZN)
6,48113F holders: Apple (AAPL)
| Stock | 13F holders | Change in the quarter | A year earlier |
|---|---|---|---|
| Microsoft (MSFT) | 6,597 | +77 | 6,066 |
| Amazon.com (AMZN) | 6,497 | +150 | 5,803 |
| Apple (AAPL) | 6,481 | +58 | 5,893 |
| NVIDIA (NVDA) | 6,471 | +172 | 5,656 |
| Alphabet (GOOGL) | 6,053 | +169 | 5,177 |
| Meta Platforms (META) | 5,363 | +4 | 5,045 |
| JPMorgan Chase (JPM) | 5,313 | +66 | 4,900 |
| Broadcom (AVGO) | 5,098 | +181 | 4,266 |
| Berkshire Hathaway (BRK.B) | 5,048 | +62 | 4,689 |
| Johnson & Johnson (JNJ) | 4,814 | +47 | 4,204 |
| Eli Lilly (LLY) | 4,802 | +274 | 4,061 |
| Visa (V) | 4,725 | +124 | 4,464 |
| Tesla (TSLA) | 4,627 | +122 | 4,013 |
| Walmart (WMT) | 4,550 | −44 | 4,102 |
| Costco Wholesale (COST) | 4,377 | −14 | 4,131 |
| AbbVie (ABBV) | 4,353 | +130 | 3,898 |
| Chevron (CVX) | 4,259 | −166 | 3,824 |
| Home Depot (HD) | 4,242 | −25 | 4,116 |
| Advanced Micro Devices (AMD) | 4,227 | +838 | 2,731 |
| Cisco Systems (CSCO) | 4,220 | +342 | 3,560 |
What does a 13F filing show, and what does it miss?
A 13F is the quarterly report that every institutional investment manager with $100 million or more in US-listed stocks files with the SEC: hedge funds, mutual fund companies, pension funds, banks and advisers. It lists the long positions held on the last day of the quarter and is due within 45 days, so the Jun 30, 2026 holdings had to be public by Aug 14, 2026.
- It shows: long positions in US-listed stocks and ETFs, plus some options and convertible bonds, at the quarter end.
- It misses: short positions, cash, bonds, most non-US shares, and every trade made between two quarter ends.
- It is late: by the time a report is public, the position may already have been sold.
- It counts managers, not money: one small adviser and one giant fund each add one holder.
This page counts holders; it does not measure what the stocks did next. Whether copying the filings pays is covered in is copying hedge fund 13Fs a good strategy, and the other public filings worth following in how to track smart money.
How can investors use 13F ownership data?
- Use it for breadth: a fast rise in holders shows a stock moving onto many institutions’ radar, often after a strong run.
- Look at new and closed positions, not only the net change: many funds entering and leaving at once means disagreement.
- Remember the delay: a quarter-end snapshot filed weeks later describes the past, not what funds hold today.
- Check crowding: a stock held by thousands of funds can fall hard when many of them sell at once.
- Treat it as one input next to valuation, the business and how the stock fits your portfolio.
Method and caveats
- Holdings: 13F filings for Q2 2026 (the quarter ended Jun 30, 2026), aggregated per stock for 997 US stocks in Exent’s coverage. 13F holders = the number of institutions reporting a position.
- Change in the quarter: holders at the quarter end minus holders a quarter earlier; the percentage is that change over the earlier count. New listings and thinly held stocks are left out of the gain and loss rankings.
- New and closed positions: institutions that reported a stock for the first time, or stopped reporting it, in the quarter.
- 13F reports include long positions only and are filed up to 45 days after the quarter ends. Totals can double count shares that more than one manager reports.
- Past performance does not guarantee future results. Historical figures are calculated by Exent from market data and are for education only; they are not investment advice or a recommendation to buy or sell any security.
How Exent follows big funds
- Radar follows big‑fund moves, insider buys and Congress trades in one feed, so you see who is buying a stock as the filings land.
- Gems are the stocks where several of the top‑ranked analysts agree: a second opinion next to what the funds hold, not a guarantee.
- Upload your portfolio to see how crowded your holdings are and how they would have done in past crashes.
Frequently asked questions
By the change in the number of 13F holders in Q2 2026 (the quarter ended Jun 30, 2026), the biggest relative gains were MaxLinear (MXL), +91.3% to 461 holders; Vishay Intertechnology (VSH), +57.8% to 494 holders; Sezzle (SEZL), +49.8% to 352 holders.
By the change in the number of 13F holders in Q2 2026 (the quarter ended Jun 30, 2026), the biggest relative drops were Honeywell International (HON), −22.7% to 2,237 holders; Exxon Mobil (XOM), −19.0% to 4,004 holders; Fastly (FSLY), −14.9% to 320 holders.
The most widely held stock at Jun 30, 2026 was Microsoft (MSFT), held by 6,597 institutions filing 13F reports, followed by Amazon.com (AMZN) with 6,497 and Apple (AAPL) with 6,481.
Within 45 days of each quarter end, so mid-February, mid-May, mid-August and mid-November. Reports for the quarter ended Jun 30, 2026 were due by Aug 14, 2026.
Short positions, cash, bonds, most non-US shares and any trading between quarter ends. It is a snapshot of long positions on the last day of the quarter, filed up to 45 days later.
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Educational content, not investment advice. Examples are illustrative; past performance does not guarantee future results.