TULP enters the final day of April with short sellers rebuilding positions at the fastest pace in months — and a recent regulatory filing that may explain why.
Short interest has more than doubled over the past week. It climbed from roughly 1.1% of the free float on April 21 to 2.6% by April 28 — a 135% surge in borrowed shares in five trading sessions. That move retraces the full retreat seen through late March and early April, when shorts had unwound from a prior cluster near 2.2% back down toward a low of around 1.1%. The catalyst for the rebuild appears to coincide with an April 17 SEC filing: an 8-K disclosing entry into a material definitive agreement and the creation of a direct financial obligation. That filing, rated high importance in ORTEX's news feed, gave short sellers fresh reason to look twice at the balance sheet.
The borrow market tells a more ambiguous story. Despite the sharp rise in short interest, availability is extraordinarily loose — the ratio of shares still available to borrow relative to existing shorts runs above 1,500%. That means there is no shortage of supply for new bearish positions. Cost to borrow has nevertheless climbed, reaching 16.5% APR — up roughly 20% on the week and 25% over the past month. That is elevated for a stock of this size, and the steady upward drift suggests growing demand for borrows even in a market where supply is plentiful. The ORTEX short score has followed the same direction, rising from about 33 a fortnight ago to 41.3 as of April 28 — not an extreme reading, but a clear trend.
The ownership structure deserves attention here. Air T, Inc. holds roughly 90.5% of shares outstanding, with affiliated entities AO Partners and BCCM Advisors together accounting for overlapping tranches of a further 47% and 28% respectively. This is an exceptionally thinly traded micro-cap with a market capitalisation of around $6.9 million. The concentration means the free float is tiny, and any meaningful short position can move the SI percentage significantly even when the absolute share count is small — the 26,800 shares short that underpin the current 2.6% SI reading illustrate how thin the trading base is. Nicholas Swenson and Daniel Philp also appear in the ownership register with small but recently reported positions.
Earnings history adds context to the cautious lean in positioning. All four of the most recent post-earnings sessions produced negative returns. The two most acute moves — a one-day drop of 12.8% after the February 2026 report and a 16.6% fall following the November 2025 announcement — suggest the stock has struggled to hold ground on results day. The five-day windows were similarly punishing, with declines of 9.4% and 20% respectively after those two events. No next earnings date is currently scheduled in ORTEX's calendar.
The week to watch is the one in which any further detail emerges about the obligations disclosed in the April 17 8-K — specifically whether the new financial commitment constrains the company's already limited balance sheet flexibility, and whether the Air T ownership bloc responds to the short build with any public filing of its own.
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