--- title: "Upstart shorts own 33% of the stock; bond buyers demanded a thicker cushion on its $400 million loan deal" description: "On September 28, KBRA rated $400 million of Upstart loan paper with 65.30% protection in front of the senior notes, and the September 15 short print shows bears holding a third of the float. The bond market and the borrow market have priced the same loan book in opposite directions, and the November 3 report tests which read survives." publisher: "The Inference" section: "Money" published: 2026-10-10T23:16:40.315Z modified: 2026-10-10T23:16:40.315Z canonical: https://theinference.org/article/upstart-shorts-own-33-of-the-stock-bond-buyers-demanded-a-thicker-cushion-on-its-400-million-loan-deal language: en keywords: "Fintech, Short Interest, Securitization, Insider Trading, Consumer Lending" --- # Upstart shorts own 33% of the stock; bond buyers demanded a thicker cushion on its $400 million loan deal > On September 28, KBRA rated $400 million of Upstart loan paper with 65.30% protection in front of the senior notes, and the September 15 short print shows bears holding a third of the float. The bond market and the borrow market have priced the same loan book in opposite directions, and the November 3 report tests which read survives. ## Two markets are pricing the same loan book On September 28, 2026, KBRA [assigned preliminary ratings to Upstart Securitization Trust 2026-4](https://finance.yahoo.com/markets/stocks/articles/kbra-assigns-preliminary-ratings-upstart-223600595.html), a $400.0 million deal of notes against an approximately $500.0 million pool of consumer loans, the 52nd [Upstart-platform securitization](https://theinference.org/markets/companies/upstart) [1]. Senior notes carry 65.30% credit enhancement, the thinnest class 20.50% [1]. Short sellers were there first: [the September 15 print, published October 7](https://www.quiverquant.com/news/Upstart+Holdings+Stock+Short+Interest+Rises+to+33.13%25), shows 33.13% of the float sold short, 27,649,788 shares, up 6.56% since August 31 and needing 6.86 days of volume to cover [2]. ## The pool got riskier and the cushion got thicker Deal 51 sets the baseline: [rated on June 23, 2026](https://markets.financialcontent.com/prnews/article/bizwire-2026-6-23-kbra-assigns-preliminary-ratings-to-upstart-securitization-trust-2026-3), UPST 2026-3 was $320.005 million of notes against an approximately $400.0 million pool at 64.75% senior enhancement [3]. *Chart: **Senior protection rose 55 basis points on a bigger pool with more grade E loans** Column chart of initial credit enhancement percent by note class for Upstart ABS deals 2026-3 and 2026-4* *Initial credit enhancement by note class, in percent of each class. KBRA preliminary ratings for UPST 2026-3 (June 23, 2026) and UPST 2026-4 (September 28, 2026), KBRA rating releases. [1][3]* Deal 52 is a quarter larger by notes and leans lower in credit quality: grade E loans are 47.1% of the pool against 43.3% in deal 51 [4]. For the same ratings, KBRA demanded a thicker cushion: 55 basis points more on the senior classes, 55 more on B, 45 more on C, the same 20.50% on D [1][3]. More risk in the pool is answered with more protection in front of the notes. ## The bears' exhibit is Upstart's own macro gauge Upstart's [macro index printed 1.49 on October 5, 2026](https://www.marketscreener.com/news/upstart-publishes-september-2026-originations-and-latest-umi-ce785ddbd080f122), roughly 49% above what the company calls a normal economy, above 1.0 since early 2022 and below its 2024 peak of 1.68 [5]. September originations were $1,378.3 million after August's $1,342.1 million; the third quarter totaled $4,117.8 million [5][6]. Management kept its roughly $1.4 billion revenue guidance only after noting the index sat at the top of the 1.40 to 1.50 band framing its outlook [7]. ## The founders bought and the loan-book president sold Over six months, founder Dave Girouard bought $4,999,606 of stock and chief executive Paul Gu bought $2,652,500 [2]. Over the same stretch, president Sanjay Datta sold $4,531,373 across eight sales [2]. *Chart: **Upstart's founders bought $7.7M of stock in six months while its president sold $4.5M** Diverging bars of open-market insider trades in Upstart stock over six months, in millions of dollars* *Open-market insider trades over six months to October 2026, US dollars in millions, purchases positive and sales negative. Benzinga data as reported October 7, 2026. [2]* Datta is the executive quoted welcoming new lending partners in [the October 7 Credit Union of Denver announcement](https://finance.yahoo.com/small-business/articles/credit-union-denver-partners-upstart-130000739.html), a credit union originating through Upstart since April [8]. Motives are not on any tape. The split is. ## What the defense rests on The defense rests on the second quarter: originations of $4.2 billion, revenue of roughly $365 million up 42% year over year, GAAP net income of roughly $17 million, and loans on the balance sheet down to 5.9% of outstanding principal, the lowest in almost two years [7]. The shares closed at $24.10 on October 9 against a 52-week range of $22.56 to $55.22, down more than 70% from last July's peak [9][10][11]. One automated screener still calls it unprofitable [10], a label that quarter contradicts. ## Two prints decide which price is right [Third quarter results land on November 3, 2026](https://finance.yahoo.com/technology/ai/articles/upstart-announce-third-quarter-2026-200500644.html) [12]. The shorts need 6.86 days of volume to exit [2], which points to a crowded door rather than a quiet one. Both markets have priced Upstart credit in public: one with collateral, one with borrowed shares. If the print holds guidance against a 1.49 macro read and the 53rd securitization prices at or below 65.30% senior enhancement, the bond market's read stands. If that cushion climbs again or the shelf goes quiet, the shorts have it. ## Takeaway KBRA charged Upstart a thicker cushion on a riskier pool while shorts climbed to 33% of the float; the November 3 print tests which market read the loan book right. ## Sources 1. [Business Wire via Yahoo Finance, "KBRA Assigns Preliminary Ratings to Upstart Securitization Trust 2026-4", 28 September 2026](https://finance.yahoo.com/markets/stocks/articles/kbra-assigns-preliminary-ratings-upstart-223600595.html) 2. [Quiver Quantitative, "Upstart Holdings Stock Short Interest Rises to 33.13%", 7 October 2026](https://www.quiverquant.com/news/Upstart+Holdings+Stock+Short+Interest+Rises+to+33.13%25) 3. [Business Wire via FinancialContent, "KBRA Assigns Preliminary Ratings to Upstart Securitization Trust 2026-3", 23 June 2026](https://markets.financialcontent.com/prnews/article/bizwire-2026-6-23-kbra-assigns-preliminary-ratings-to-upstart-securitization-trust-2026-3) 4. [Asset Securitization Report, "Upstart Network raises $400 million from consumer loans", 30 September 2026](https://asreport.americanbanker.com/news/upstart-network-raises-400-million-from-consumer-loans) 5. [Business Wire via MarketScreener, "Upstart Publishes September 2026 Originations and Latest UMI", 5 October 2026](https://www.marketscreener.com/news/upstart-publishes-september-2026-originations-and-latest-umi-ce785ddbd080f122) 6. [Business Wire via Yahoo Finance, "Upstart Publishes August 2026 Originations and Latest UMI", 3 September 2026](https://finance.yahoo.com/economy/policy/articles/upstart-publishes-august-2026-originations-114500428.html) 7. [Quartr via Yahoo Finance, "UPSTART HOLDINGS INC Q2 FY2026 earnings call transcript", 4 August 2026](https://finance.yahoo.com/quote/1UPST.MI/earnings/1UPST.MI-Q2-2026-earnings_call-660981.html) 8. [Business Wire via Yahoo Finance, "Credit Union of Denver Partners with Upstart to Expand Access to Personal Lending", 7 October 2026](https://finance.yahoo.com/small-business/articles/credit-union-denver-partners-upstart-130000739.html) 9. [Yahoo Finance UK, "Upstart Holdings, Inc. (UPST) options chain", 9 October 2026](https://uk.finance.yahoo.com/quote/UPST/options/?date=1793318400&straddle=false&type=all) 10. [GuruFocus, "Upstart Holdings Inc (UPST) Shares Surge 6.8%: What GF Score of 66 Tells Investors", 5 October 2026](https://www.gurufocus.com/news/9110526/upstart-holdings-inc-upst-shares-surge-68-what-gf-score-of-66-tells-investors) 11. [The Motley Fool (James Brumley) via MSN, "Is Upstart Stock a Buy, Sell, or Hold At Its New 52-Week Low?", 5 October 2026](https://www.msn.com/en-us/news/other/is-upstart-stock-a-buy-sell-or-hold-at-its-new-52-week-low/ar-AA2dBh6N) 12. [Business Wire via Yahoo Finance, "Upstart to Announce Third Quarter 2026 Results on November 3, 2026", 6 October 2026](https://finance.yahoo.com/technology/ai/articles/upstart-announce-third-quarter-2026-200500644.html) --- Upstart shorts own 33% of the stock; bond buyers demanded a thicker cushion on its $400 million loan deal — The Inference. Canonical: https://theinference.org/article/upstart-shorts-own-33-of-the-stock-bond-buyers-demanded-a-thicker-cushion-on-its-400-million-loan-deal