23 September 2026.

New York starts cloudy and cool at 56°F, then reaches about 71°F as breaks of sun develop; tonight falls back to 56°F. There is no meaningful rain signal, so the useful equipment is a light layer rather than an umbrella. Forecast

Reporting checked through 4:31 a.m. ET.

Mitchell Dong is stepping down as chief executive of Pythagoras Investments to start an energy-trading venture. Eric Zhao, who joined the firm in 2014 after Société Générale, takes over. Pythagoras manages about $90 million; its $45 million Arbitrage strategy returned 0.25% in August and roughly 2.5% this year, according to figures reported by Financial News on September 22. Read the report

The modest return is informative. An arbitrage book can look dull precisely when it is doing its job, but 2.5% year to date leaves little room for operational friction, financing surprises or an investor deciding that cash is competitive enough. Dong’s move also joins two markets that increasingly share talent and machinery: fragmented venues, collateral-intensive positions, round-the-clock risk and a premium on reliable data. The unanswered question is whether the new energy business will be physical, financial or both. That distinction determines whether the edge travels with the trader or requires an entirely new operational spine.

Borsa Istanbul will remove more than a quarter of the BIST 100 in its largest reshuffle in six years. The exchange is applying new volatility and equity-size requirements for admission to the Star Market, which is itself a prerequisite for the BIST 30 and BIST 100. The change follows the concentrated-fund liquidity crisis that led regulators to freeze trading and order the liquidation of 131 funds. Reuters, September 22

Changing the index does not create liquidity in the underlying shares, but it changes forced demand from passive and benchmark-aware money. Removing thin, volatile constituents makes the headline benchmark healthier by construction and shifts some of the adjustment onto holders tracking it. That is preferable to preserving an index whose membership validates fragile prices, although the rebalance itself may concentrate selling in the names the new rules are meant to quarantine.

Snorkel AI raised $350 million at a $3.5 billion valuation. More strikingly, chief executive Alex Ratner says annualized revenue passed $350 million, up from about $20 million a year ago, after the company pivoted in September 2025 from selling labeling software to delivering finished datasets and reinforcement-learning environments. Reuters, September 22

The change in product matters more than the valuation. Snorkel’s specialists in coding, law and medicine write scenarios, tasks and grading rubrics; thousands of models and agents perform much of the production and quality-control work. The buyer receives a training asset rather than seats in a tool. That turns expert judgment into inventory and lets the supplier price the output rather than the labor hours.

Ratner’s claim that every valuable frontier dataset will retain some human input is plausible but convenient for the seller. The important test is whether the resulting environments predict performance on genuinely novel tasks, rather than merely supporting another cycle of benchmark-shaped optimization. Snorkel expects profitability this year; no customer concentration or gross-margin figures were disclosed.

Jev was released September 15. The model accepts text or semi-structured state and returns typed probabilities: a yes/no confidence, a distribution over choices or a score. It does not write prose. At $0.042 per million input tokens with free output, it is designed for cheap, repeated decisions inside agent systems. TypeSafe documentation, Simon Willison’s technical account

The developer response supplies useful secondary signals. Developer experiments appeared almost immediately—Jev playing 2048, reproducing left-pad, reranking search results and being coerced into character-by-character chat. TypeSafe briefly lost API availability under demand, and integrations arrived through Vercel, Cloudflare, LangChain and Langfuse. Yesterday Willison released an llm-typesafe plug-in that makes the three query types inspectable from his CLI. The pattern is a primary launch followed by several independent artifacts and a credible observer explaining why developers care.

The appeal is also the risk. Jev supplies a number without a rationale. It is weak on numbers, dates and adversarial content, according to its own documentation, and a confident score can conceal bias more efficiently than a paragraph can. Cheap evaluation makes large test suites affordable; it does not make them optional.

OpenAI’s GPT-6 Luna launched at $0.10 per million input tokens and $0.50 per million output tokens; GPT-6 Sol is $2 and $10. Simon Willison’s September 22 comparison puts both at roughly half the promotional price of their GPT-5.6 counterparts. Anthropic also cut Claude Opus 5.5 to $4 input and $20 output, with cache reads down 60%. Pricing comparison and first tests

For agent economics, the cache price may matter more than the headline input price: long tool-using sessions repeatedly reread their own history. Lower cost also changes architecture. A team can route routine classification to Luna or a decision model such as Jev, reserve Sol or Opus for ambiguous work and still afford more verification calls. Early capability claims remain unsettled. Willison twice watched Opus 5.5 exhaust its 128,000-token reasoning allowance while drawing a pelican on a bicycle—an expensive reminder that more thinking is not a monotone good.

Incendiamoeba cascadensis can divide at 145.4°F, remain active at 147.2°F and recover after brief exposure to 158°F. The amoeba, found in a neutral hot spring at Lassen Volcanic National Park, sets the known heat record for a eukaryote—the domain that includes animals, plants and fungi. The research appeared in Cell on September 22. Reuters’ report on the study

It survives by reshaping itself, forming a protective layer and activating unusually extensive protein-maintenance and DNA-repair machinery. The ecological detail is delightful: at these temperatures it can feed on heat-adapted bacteria with little competition from other predators. That makes it a top predator in a world measured in microns. The astrobiology implications should be kept in proportion—hot terrestrial springs are not proof of extraterrestrial life—but the organism widens the experimentally observed range in which complex cellular machinery can still function.

At 75, Arlene Shechet has made her first Corten-steel sculpture and placed it beside hand-shaped aluminum and 14 ceramic works using the ancient terra sigillata technique. Flo is more than 10 feet tall, its weathered planes leaning into curves and nearly-triangles; Eve, in pale green and blue-gray aluminum, rises 16 feet and was measured to fit the front gallery within an inch. Pace’s exhibition page, studio profile and installation views

Shechet’s strength is material without material worship. The Corten patina paints itself; the ceramic finish is clay refined into a nearly waterproof slip; the aluminum still shows the pressure of hands rather than molds. The works reward walking around them because their balance changes with the angle. She Said She Said runs through October 24 at 508 and 510 West 25th Street. It is an easy Chelsea stop whose scale should register even if the gallery is quiet enough to hear your shoes.

The Morgan’s “Tarot Magic in Music” begins tonight at 7 p.m. in Gilder Lehrman Hall. Victoria Bond’s program moves from the card scene in Carmen through Ravel’s Tzigane, Katherine Hoover’s Kokopeli, Boulez’s Domaines and Bond’s own Instruments of Revelation. Ticket holders can see the Tarot! exhibition from 5:30 to 7 p.m. before the one-hour concert. Exact program and logistics

At $60, it is expensive for a chamber hour, and selectable inventory was not verified. The pairing is unusually coherent, though: music about divination heard after looking at the images that supplied its vocabulary. The clarinet, flute, violin, cello and piano ensemble should also make Boulez feel less like prescribed modernism and more like live, physical conversation.

Hommali, now open at 28 Seventh Avenue South near Leroy Street, is built around Thai jasmine rice rather than a parade of greatest hits. White hom mali arrives with every meal; chef Chattchakorn Khajornchaisan makes curry pastes from several Thai chiles and dry-ages meat in view of the dining room. The terracotta, green and white interior follows a rice plant’s life cycle across two levels. Opening report with room and dishes

The reported tom yum seafood cocktail is a promising starting point for a seafood-led meal. The rest of the opening menu described publicly leans hard toward beef, duck and fermented-rice cream, so a full pescatarian dinner still requires the current menu and prices. That keeps this at “worth a look” rather than a booking recommendation. Dinner is listed Wednesday through Sunday, 5–10 p.m.; reservations route through Resy. The hospitality pedigree—Eleven Madison Park, Tonchin and the Standard—is encouraging, but the room has been open only three weeks.

For McQueen’s first London runway show in 25 years, Seán McGirr returned to Huntsman, the tailor that made Alexander McQueen’s own clothes. Huntsman produced three looks in three weeks, combining McQueen’s one-button jacket with Tommy Nutter’s curved sleeves, sharp proportions and theatrical shoulder roll. The making-of account

The construction detail is more useful than the celebrity pairing. McGirr pushed pockets unusually high, lengthened sleeves and asked for sleeve heads far outside Huntsman’s normal practice, packed with wadding and extra fullness. The workshop happened to employ Conrad Turner, who trained under Nutter. None of this makes the runway suit an everyday wardrobe recommendation. It shows how a house silhouette is made: moving a pocket or adding mass at the shoulder can alter the whole posture before fabric or color enters the discussion.

The Kurono Tokyo Calendrier SBR goes on sale tomorrow, September 24 at 10 a.m. ET, in a single global order window at $2,380 before tariff and tax. The 10% US import tariff takes the pre-tax landed watch to about $2,618, paid to DHL or FedEx. Orders are limited to one per customer; delivery is expected from late October. Official sale page and terms, independent introduction

Hajime Asaoka’s case is the attraction: 38mm across, 11.5mm including the sapphire crystal, polished steel, restrained lugs and a vertically guillochéd saxe-blue dial with electroformed Arabic numerals. The automatic Miyota 9122 supplies day, date and month at 9, 3 and 6 o’clock, runs at 28,800 beats per hour and has a 40-hour reserve.

It is mechanical, modestly sized and decorative without becoming theatrical. The objection is substantial. A stock Miyota triple-calendar with 40 hours of reserve is ordinary engineering at this price; the premium buys Asaoka’s proportions and dial execution. The no-cancellation, no-return policy makes photographs do too much work. Shortlist only if the case and calendar design are the point; do not buy it merely because the batch is small.

Los Angeles beat the Giants 28–6 on Monday night. Matthew Stafford threw for 327 yards and four touchdowns; Davante Adams caught eight passes for 195 yards and two scores. The connection mattered more because Puka Nacua did not play. Aaron Donald’s first game in 32 months produced three tackles and a third-down stop near the goal line. AP game report and box score

The Giants lost Jaxson Dart to a left-knee injury on their seventh offensive snap and managed 182 total yards. Jameis Winston completed 11 of 27 passes for 111 yards with an interception. New York hosts Tennessee on Sunday; the MRI and practice reports will decide whether that is a recovery spot or another improvised offense.

For fantasy, Adams’ eruption does not automatically transfer to weeks when Nacua returns, but it demonstrates that Stafford will feed the matchup rather than preserve a nominal hierarchy. Washington has a larger problem: Jayden Daniels reportedly dislocated his left elbow again and Marcus Mariota is expected to start against Seattle. That removes Daniels from any normal lineup discussion until the team supplies a medical timetable.

BETTING — PASS. Tuesday’s injury news changes several Week 3 assumptions, while the first full practice reports and verified FanDuel/DraftKings prices are not yet available. No current independent probability was paired with an executable, timestamped price. The correct early-week position is to wait.

Krill have announced Secret Language, their first album under that name in a decade, due November 13 on Exploding in Sound. Start with “Dominate”, released yesterday with a video directed by Heavenly Tedious.

Jonah Furman frames it as a song about growing up amid 1990s and 2000s American fantasies of power—an appropriately awkward subject for a band whose charm was always nervous intelligence rather than command. The reunion began when Ovlov asked Krill to open a Chicago show; Macie Stewart and Maria Jacobson are among the album’s contributors. This is guitar music with a little abrasion left in it, a useful counterpoint to electronic and ambient listening.

For a full-record option, Cincinnati’s the Drin have made a 23-song, 75-minute double album that moves among post-punk, dub, goth, kosmische rock and folk without turning the track list into a genre exercise. Start with “I’m Not the Door,” which Pitchfork hears in the unlikely space between the Durutti Column and the Allman Brothers, then try “The Sky Has Lost the Smile,” where Eric Dietrich’s saxophone gradually lifts a swampy guitar figure into stranger air. Read the first substantial review

The running mood is cheerful decline: Dylan McCartney’s sing-speak remains gloomy, while the six-piece band has become more organic and surprisingly buoyant. Seventy-five minutes is a request, not a casual recommendation. Those two tracks will reveal whether the record’s wandering density feels expansive or merely crowded.

James Gray’s Paper Tiger opens the New York Film Festival on Friday, September 25. Miles Teller plays a Queens engineer drawn by his former-cop brother, Adam Driver, into a scheme involving Russian criminals dumping oil by the Gowanus Canal; Scarlett Johansson plays his wife. The film runs 115 minutes and the opening-night screenings at Alice Tully Hall and Walter Reade Theater are on 35mm. Film at Lincoln Center

The 6 p.m. screening advertises a Q&A with Gray, Driver, Johansson and Teller; Gray introduces the 6:30 and 9 p.m. shows. Other Friday screenings run at 6:15, 9:15, 9:30 and 9:45, with another show October 2 at 1:15 p.m. The page lists times but did not expose selectable seats, so treat the guests as a reason to check rather than proof that tickets remain. Gray’s recurrent subject—family loyalty pressed against class aspiration—has rarely had such locally specific grime.

HBO Max in the US with a subscription; two episodes available, about 30 minutes each. Sharon Horgan plays Alex, a divorced London literary agent managing an adult son, aging parents, a boss who is also her closest friend and a promisingly unavailable Rupert Friend. HBO’s current-series listing, Sharon Horgan interview, first review

This is tonight’s choice because the commitment is light and the voice is specific. Horgan is good at letting competence and self-deception occupy the same scene; the show’s midlife premise gives her several institutions—family, work, romance—to puncture without turning the evening into homework. The caveat is familiar: if embarrassment around dating and family dependence reads as cringe rather than comedy, two episodes may be plenty. Start with one half hour and let the second earn itself.