• Short interest is building against rising markets. Global short interest is up 27 percent this year to $2.9 trillion, while active long manager holdings are up 14 percent to nearly $21 trillion across 65,000+ global securities.

• Less long capital behind every short dollar. The global S3 Active Long-to-Short ratio has fallen from 8.0 to 7.2 since the start of the year: about 85 cents less of active long capital behind every dollar of short interest.

• The shorts went to Tech. Tech drew a third of new short dollars worldwide this year, and Energy is the only sector where active longs grew faster than the shorts.

Through mid-October 2026, the clearest story in equity positioning is how much capital has lined up against rising markets. Short interest is up this year in all 11 sectors worldwide. The number of stocks carrying more than $1 billion of short interest apiece has risen to 633, from 478 at the start of the year, and 2,046 are now shorted past 10 percent of their float, up from 1,536. Active longs remain the larger force, with 2,390 stocks each carrying more than $1 billion of active long capital. Both sides are bigger than in January, but shorts have grown faster.

Most of that divergence came in one stretch. Short interest and active longs grew roughly together through February. The gap opened in March and widened into mid-June, when short interest stood 35 percent above its year-end level. Shorts eased through July, rebuilt through August to a second peak in late September, and have eased since.

The global Active Long-to-Short ratio hit its low of 6.7 on June 12 and has since recovered to 7.2, with Tech driving both moves. The sector added $221 billion of short interest this year, more than the next three sectors combined, and its short book grew 46 percent against 32 percent for active longs. Its ratio fell further than any other sector’s into mid-June, then recovered about 60 percent of that decline as short interest came off a fifth from its June peak while active longs held flat. Tech now sits with nine other sectors in a tight cluster, all 10 below their January levels.

Energy went the other way. Active longs in the sector grew 49 percent this year, against 34 percent for shorts. Shorts covered twice, first in April, when they fell 14 percent in three weeks, and again in early summer. By July 31, Energy’s ratio was up 16 percent on the year. Since then, shorts have rebuilt faster than longs and taken back about a quarter of that gain, but Energy is still the only sector above its January level.

Hedge funds hold nearly $4 trillion of actively managed long positions, and the mix is shifting. Fundamental stock pickers still run the largest book at $1.19 trillion, but Quant, up 33 percent this year against Fundamental’s 4, is $21 billion behind and closing. The gap was $270 billion in December. Quant already leads in the Americas by $140 billion, and at the current pace it takes the top spot globally within weeks.

Through mid-October, global equity short positions have grown twice as fast as active longs, and the long capital behind every short dollar has fallen from $8.0 to $7.2. That pressure does not spread evenly. One group to watch is what S3 defines as Battlegrounds, stocks with committed capital on both sides, where price moves fastest when one side gives way. Rising prices have come with rising doubt.

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The information herein (some of which has been obtained from third party sources without verification) is believed by S3 Partners, LLC (“S3 Partners”) to be reliable and accurate. Neither S3 Partners nor any of its affiliates makes any representation as to the accuracy or completeness of the information herein or accepts liability arising from its use. Prior to making any decisions based on the information herein, you should determine, without reliance upon S3 Partners, the economic risks, and merits, as well as the legal, tax, accounting, and investment consequences, of such decisions.