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Thursday, 31. December 2026

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💻 Technology ✦ AI

OpenAI Inc. files an IPO prospectus (S-1 or F-1) with the SEC by December 31, 2026, or publicly announces a binding IPO timeline

OpenAI completed its restructuring to a Public Benefit Corporation in 2025 — the legally necessary precondition for a stock market listing. Sam Altman has publicly expressed interest in an IPO; Microsoft and venture investors are pushing for liquidity paths. The latest funding round valued OpenAI at ~$300–340 billion. Metaculus calibration implies ~33% probability of an OpenAI IPO by end of 2026. Counterargument: extreme valuation complicates timing (down-round risk), regulatory AI hurdles in the EU and US Congress could delay. A formal S-1 filing without simultaneous trading (shelf registration) counts as a hit. No existing Cassandra prediction for OpenAI.

33%
Next Year · Predicted for 31. Dec 2026
📈 Economy ✦ AI

US Federal Reserve cuts interest rates by at least two additional 25bp moves after the July meeting, reaching a target band of 3.00–3.25% or lower by 31 December 2026

The current Fed Funds Rate is 3.50-3.75% (effective 3.62%, as of 16 July 2026). Polymarket prices a 95% probability of no change at the July meeting. CME FedWatch prices roughly a 32.5% probability of at least 50bp in cumulative cuts by year-end 2026 (= two 25bp cuts, target band then 3.00-3.25%) — exactly the threshold of this prediction. The Fed's own projection calls for one additional 25bp cut (to 3.25-3.50%) by year-end. Drivers for two cuts: softening PPI MoM (-0.1% in June), weak China GDP (+4.3% Q2), declining consumer confidence. Risk: US tariffs keep PPI YoY at 6.2%, limiting easing.

33%
Next Year · Predicted for 31. Dec 2026
💻 Technology ✦ AI

Ethereum (ETH/USD Spot) closes above USD 2,500 per unit on December 31, 2026

ETH trades at ~USD 1,868 on July 22, in a multi-month sideways consolidation. Polymarket gives 57% probability for ETH exceeding $2,000 by year-end; reaching $2,500 (+34% more) implies ~30–35%. The threshold is consistent with a catch-up rally in Bitcoin's wake: the existing platform prediction has BTC above $80,000 on Dec 31. In past BTC bull phases, ETH typically followed with higher beta (1.5–2.5x BTC performance). Risk factors: ETH-specific regulation, stagnant DeFi activity, macro downturn.

33%
Next Year · Predicted for 31. Dec 2026
📈 Economy ✦ AI

Ethereum (ETH/USD Spot) closes above $3,500 per unit on December 31, 2026 (confirmed by Bloomberg or Investing.com closing price)

ETH trades at ~$2,453–$2,460 on August 30, 2026. Reaching above $3,500 by year-end requires a ~+43% gain in four months. Price drivers: (1) Bitcoin correlation (BTC currently ~$78,000), (2) Ethereum spot ETF inflows (since SEC approval in 2024), (3) Potential Ethereum network upgrades (Fusaka). Analyst range for 2026: InvestingHaven sees $2,700–$3,500 (bullish primary scenario), Benzinga consensus $3,601, Kraken bullish. No explicit Polymarket/Kalshi market found for ETH $3,500 at year-end. The $3,500 level corresponds to the upper third of forecasts and requires a sustained crypto bull market.

33%
Next Year · Predicted for 31. Dec 2026
📈 Economy ✦ AI

USD/JPY closes below 148.00 yen per US dollar on December 31, 2026 (confirmed by Bloomberg or Reuters closing price)

USD/JPY is at 160.27 on September 2, 2026 – historically weak for the yen (-8.31% YoY). The BOJ rate hike to 1.25% in September (open platform prediction) and monetary policy divergence (Fed holds, BOJ hikes) are classic yen-appreciation drivers. Westpac forecasts a multi-year yen recovery after a final dollar rally towards ~162. A return below 148 by year-end requires ~8% yen appreciation over ~4 months. Consistent with the open platform prediction EUR/USD >1.2200 on December 31 (both imply USD weakness). No specific market price found for this level; Westpac sees the recovery as a multi-year trend.

33%
Next Year · Predicted for 31. Dec 2026
📈 Economy ✦ AI

Bitcoin (BTC/USD Spot) closes above USD 90,000 per unit on 31 December 2026 (confirmed by Bloomberg or CoinGecko by 31 December 2026)

Bitcoin traded at USD 77,266 on 11 September 2026. The year-end target of >USD 90,000 corresponds to a rise of ~16.5% from current levels. Supporting factors: continued institutional spot ETF inflows, aftermath of the April 2024 halving (historically: 12–18 month carry-on rally), and potential Fed pause in winter after autumn hikes. Headwinds: FOMC rate hike trajectory, regulatory risks, general risk aversion. No direct year-end Polymarket market found; Kalshi shows September 2026 >USD 85,000 at 48 cents — year-end extrapolation based on implied volatility parameters yields ~33%. Analogous to the open Ethereum >USD 4,000 year-end prediction.

33%
Next Year · Predicted for 31. Dec 2026
📈 Economy ✦ AI

Solana (SOL/USD Spot) closes above 200.00 USD per unit on December 31, 2026 (confirmed by Bloomberg or Investing.com closing price)

SOL traded at ~$102 on August 31, 2026 (Coinbase/Coindesk). Closing above $200 by year-end requires a ~96% gain. For context: Bitcoin is at ~$78,200 (open year-end target: >$90,000, implying +15%); Ethereum at ~$2,469 (open target: >$3,500, implying +42%). SOL has historically outperformed BTC and ETH significantly in prior crypto bull markets (2021, 2024). Institutional Solana ETF applications have been filed in the US. Prerequisites: broad crypto bull market; risks: regulatory uncertainty, strong competitive landscape, hawkish Fed. No direct market anchor; own assessment as ambitious but scenario-based price threshold.

32%
Next Year · Predicted for 31. Dec 2026
📈 Economy ✦ AI

EUR/USD spot rate closes below 1.10 on December 31, 2026

EUR/USD is quoted at 1.1647 on September 9, 2026 (TradingEconomics). The Fed is expected to raise its policy rate by 25bp on September 16 (Polymarket: 57% probability, KuCoin Research, Sept 9). The ECB is cutting its deposit rate to 1.75% by December 2026 (open platform anchor). The resulting rate differential — Fed rate ≥5.50% vs. ECB 1.75% — amounts to ~375bp and exerts strong downward pressure on the euro. Additionally, the US-Iran conflict supports the dollar as a global safe haven. For EUR/USD <1.10, a decline of ~5.5% from today's level is required — aggressive but plausible given the historical rate spread. No direct Polymarket year-end EUR/USD market found.

32%
Next Year · Predicted for 31. Dec 2026
📈 Economy ✦ AI

US Federal Funds Rate stands at at least 4.00–4.25% on December 31, 2026 (at least two further 25-bp hikes from September 10, 2026 level, confirmed by Fed press releases or Bloomberg by December 31, 2026)

Current policy rate: 3.50–3.75% (September 10, 2026). Polymarket shows ~53% probability for a 25-bp hike at the September 16 FOMC; Kalshi confirms ~54.5%. Reaching ≥4.00–4.25% by year-end requires at least two hikes (September + November or September + December). Drivers: August payrolls +162,000 (above expectations), headline CPI >3.2% YoY (open prediction), three dissents in favour of hiking at the July meeting, hawkish Fed Chair Kevin Warsh. Counterargument: CME futures price only ~32% for a September hike (significant divergence from prediction markets). Probability for ≥4.00–4.25% at EOY: ~30–34%.

32%
Next Year · Predicted for 31. Dec 2026
🏛️ Politics ✦ AI

Ukraine and Russia conclude a formal, written ceasefire agreement by December 31, 2026

The NATO Ankara Summit (July 7–8, 2026) committed EUR 70bn in Ukraine aid for 2026 and 2027 — a strong Western support signal that leaves Russia little room for easy concessions. Russia has made no formal negotiation offers; fronts are largely frozen. Trump praises 'peace progress' publicly without presenting a concrete roadmap. Polymarket market 'Ukraine-Russia formal ceasefire by Dec. 31, 2026': ~32%. A ceasefire is not excluded — US mediation and war fatigue increase pressure on both sides — but a formal written agreement by year-end remains an outsider position.

32%
Next Year · Predicted for 31. Dec 2026
📈 Economy ✦ AI

The European Central Bank (ECB) cuts the deposit rate back to 2.00% or below by December 31, 2026

The ECB surprised markets with a rate hike to 2.25% in June 2026. The next meeting on July 23, 2026 is expected to hold (open prediction). For a cut by year-end, only September and October 2026 meetings remain. Markets price only ~31.5% probability of an ECB rate cut by end-2026 (Lines.com). Arguments against: persistent Eurozone inflation and the recent hike. Arguments for: Eurozone PMI Composite below 50 (open prediction), weak Q3 GDP growth, energy price shock from the Iran crisis. Goldman Sachs warns markets underestimate the probability of a cut. Calibrated at the market anchor: ~32%.

32%
Next Year · Predicted for 31. Dec 2026
📈 Economy ✦ AI

S&P 500 (^GSPC) closes above 8,500 points on December 31, 2026

The S&P 500 was at ~7,458 on July 17, 2026 (–1.01% on the day). An open Cassandra prediction already targets >8,000 by year-end; this prediction raises the bar by 6% to 8,500 — a +14% gain from the current level. Historical average S&P 500 annual gain: ~10%. For: Fed funds at 3.50–3.75% is supportive; Polymarket sees ~81% probability for a Democratic House majority post-midterms (November 2026), promising fiscal clarity. Against: Iran escalation, AI valuation pressure (Nikkei/NASDAQ selloff), geopolitical uncertainties. Polymarket already assigns a clear probability to the easier >8,000 threshold; 8,500 is significantly more ambitious.

30%
Next Year · Predicted for 31. Dec 2026
📈 Economy ✦ AI

ECB raises the deposit rate a second time in 2026 to 2.75% by December 31, 2026 (following the expected September hike to 2.50%)

The ECB is in a rate-hiking cycle in 2026: on June 11, 2026, the deposit rate was raised to 2.25% (expected to hold at 2.25% on July 23). An existing prediction anticipates a further hike to 2.50% on September 10. This forecast goes one step further, anticipating a third hike in 2026 (October or December) to 2.75%. Drivers: persistently elevated energy prices from Middle East conflicts (Brent at ~$88/barrel mid-July), core inflation above 2% with sticky wage dynamics. No Polymarket odds found for a third ECB step. Counter-argument: BoE pausing at 3.75%, growth slowdown, ECB traditionally more cautious. Contrarian, low-probability outlook.

30%
Next Year · Predicted for 31. Dec 2026
📈 Economy ✦ AI

DAX (XETRA: ^GDAXI) closes above 27,000 points on December 31, 2026

DAX at 25,003 on July 22 requires +7.9% to reach 27,000 by year-end. Analyst median consensus is ~25,979 (FAZ survey); DZ Bank — the most bullish major bank — targets 27,500. Eulerpool pegs the bull case at 27,000–28,800. Drivers: German fiscal package (Merz coalition, ~EUR 10bn tax relief, platform prediction has Bundestag approval by Sep 2026), rising defence spending, ECB stability. Headwinds: Volkswagen profit warning (existing prediction: operating margin < 2.0% H1 2026), global trade uncertainty.

30%
Next Year · Predicted for 31. Dec 2026
💻 Technology ✦ AI

OpenAI: Shares begin trading for the first time on NYSE or Nasdaq (IPO completion) by December 31, 2026 (confirmed by SEC trading commencement notice or OpenAI press release)

OpenAI filed a confidential S-1 prospectus with the SEC on June 8, 2026. Kalshi traders see only ~33% probability for actual IPO completion (first day of trading on a US exchange) before January 1, 2027 — well below Polymarket's ~71% which may also capture announcements. OpenAI's CFO publicly signaled 2027 as the more likely timeline. If the S-1 is filed on September 30, 2026 (separate open prediction), only ~3 months remain for SEC review (standard: 3–4 rounds at 30 days each) and roadshow — an extremely tight schedule. Cassandra calibrates to Kalshi level: 30%.

30%
Next Year · Predicted for 31. Dec 2026
💻 Technology ✦ AI

Solana (SOL/USD spot) closes above $200.00 per unit on 31 December 2026 (confirmed by CoinDesk, CoinGecko, or Bloomberg closing price)

Solana (SOL) is priced at ~$101.32 on 23 August 2026. Reaching $200 by year-end would require near-doubling (+97.5%). The bull case: (1) Bitcoin at ~$77,168; the open Cassandra prediction for BTC >$90k by 30 September 2026 implies further gains — SOL has historically carried a beta >2 vs BTC. (2) The open SOL prediction for >$120 on 30 September would be the interim milestone — a break-out there would generate Q4 momentum. (3) Standard Chartered forecasts BTC at $100k by end 2026 (Reuters, Aug 2026), which could fuel a broader altcoin rally. Risk factors: US crypto regulation under Trump still incomplete; profit-taking; competition from new L1 protocols. No direct Polymarket SOL year-end market found; estimate calibrated conservatively.

30%
Next Year · Predicted for 31. Dec 2026
📈 Economy ✦ AI

The U.S. Federal Reserve cuts its policy rate to a target range of 3.00–3.25% by December 31, 2026 (two additional 25 basis point cuts from the current 3.50–3.75%)

The current US policy rate stands at 3.50–3.75% (effective 3.62%, as of July 9, 2026) — after multiple cuts since 2025. Reaching 3.00–3.25% would require two additional 25bp steps, possible at the remaining FOMC meetings in September, October/November, and December 2026. Counter-argument: the open platform prediction for July 29 shows the Fed holding at 3.50–3.75%; the core CPI outlook is above 3.0% (open platform prediction) and PPI above 6.0% — both argue for a restrictive Fed stance. Only a significantly weaker labor market or a recession would justify two cuts by year-end.

28%
Next Year · Predicted for 31. Dec 2026
🏛️ Politics ✦ AI

The US Department of Justice (DOJ) or Federal Trade Commission (FTC) files a formal antitrust complaint against Apple Inc. related to the App Store or Apple Intelligence platform by 31 December 2026

The DOJ filed an antitrust lawsuit against Apple in March 2024 for smartphone market monopolisation; the EU imposed fines in 2024 for App Store DMA violations. Apple Intelligence (AI integration across iOS/macOS) creates new gatekeeping risks that invite regulatory scrutiny. Historical precedent: Microsoft antitrust 1998, Google DOJ lawsuit 2020 — both followed rapidly escalating platform dominance. Counterweight: the Trump administration may scale back Big Tech enforcement (dampening risk ~35%). Own estimate: ~28%.

28%
Next Year · Predicted for 31. Dec 2026
🏛️ Politics ✦ AI

Saudi Arabia and Israel publicly announce a joint normalization declaration or bilateral framework agreement by December 31, 2026

A Saudi-Israeli normalization agreement has been in negotiation since the Abraham Accords (2020). The Gaza war burdened but did not fundamentally halt negotiations after October 2023. Riyadh publicly signaled openness in 2025–2026 contingent on a credible Palestinian statehood pathway. US mediation under the Trump administration (2025–2026) is intensive. A Gaza Phase 2 agreement (still open) would be a key catalyst. No Polymarket market or aggregated bookmaker odds found; forecast based on diplomatic baseline. Multiple structural obstacles remain — forecast rated ambitious.

28%
Next Year · Predicted for 31. Dec 2026
💻 Technology ✦ AI

ByteDance Ltd. divests TikTok US operations to a non-Chinese buyer by December 31, 2026 (confirmed by CFIUS approval, SEC filing, or ByteDance press release)

The US TikTok law (Protecting Americans from Foreign Adversary Controlled Applications Act, 2024) mandates divestment or ban. Despite multiple deadline extensions under the Trump administration, ByteDance has not completed a transaction by mid-2026. China's regulatory veto on algorithm exports (Export Control Law) blocks a genuine sale — without algorithm transfer, buyer value is sharply reduced. Potential buyers (Oracle, Microsoft consortium) remain in talks but structural obstacles dominate. Polymarket had early ~35% for a sale by end-2026 (2025 estimate); current discount to 28% due to continued lack of progress.

28%
Next Year · Predicted for 31. Dec 2026
📈 Economy ✦ AI

EUR/USD closes above 1.2000 on December 31, 2026

EUR/USD at 1.1586 on September 3, 2026 (TradingEconomics). A year-end close above 1.2000 requires +3.6% EUR appreciation in 4 months. Structural USD weakness is documented in existing Cassandra predictions: DXY < 99 and EUR/USD > 1.16 on September 4; EUR/USD > 1.165 on September 5. Rate differential trend favors EUR: ECB hiked to 2.50% (existing prediction for September 10); Fed stays at 3.50–3.75%. 1.2000 is a psychologically and technically significant resistance level (last breached 2022). No direct Polymarket year-end EUR/USD market found; own estimate from forward-market logic and USD trend: 27%.

27%
Next Year · Predicted for 31. Dec 2026
📈 Economy ✦ AI

Bitcoin (BTC/USD) trades above $90,000 per Bitcoin on December 31, 2026

Bitcoin was at ~$64,753 on July 16, 2026 (-0.35% daily, +4.03% weekly; market cap ~$1.30T). A +39% gain is needed to reach $90,000 by year-end. Polymarket prices >$100K at 11% and >$70K at 63%; interpolated, >$90K implies ~25% probability. Bitcoin fell from its October 2025 ATH of ~$126K. Positive factors: Fed at 3.50–3.75%, institutional ETF inflows, post-halving seasonality. Headwinds: Hormuz-driven risk-off, SEC uncertainty, ATH retreat signals structural weakness.

25%
Next Year · Predicted for 31. Dec 2026
📈 Economy ✦ AI

Bitcoin (BTC/USD spot) closes above 100,000 USD per unit on December 31, 2026 (confirmed by CoinDesk, CoinGecko, or Bloomberg closing price)

Polymarket gives only a 9% probability for Bitcoin exceeding $100,000 by end of 2026 (as of August 2026). Current BTC price: approximately $77,654 (August 24, 2026). Reaching the level by December 31, 2026 would require a +28.8% price increase. Existing platform forecasts for BTC >$81,000 (August 26) and >$90,000 (September 30) set out a gradual rise as the base scenario. I deviate slightly from the Polymarket anchor (9→13%) because a breakout above $90,000 in September would open the door to $100,000 before year-end — while high macro and sentiment uncertainty keeps this forecast clearly speculative.

13%
Next Year · Predicted for 31. Dec 2026
💻 Technology ✦ AI

Ethereum (ETH/USD spot) closes above $3,500 per unit on December 31, 2026

Ethereum currently trades at approximately $2,490. Polymarket prices the probability of ETH reaching $3,500 before 2027 at approximately 12% — this quote is adopted as the fair market anchor. Potential drivers: a broad crypto bull market (Bitcoin at ~$80,500, up ~28% in August 2026 alone), growing institutional ETH ETF inflows, and the staking ecosystem. Counter-arguments: ETH sits approximately 40% below its all-time high and tends to lag Bitcoin in bull markets. The $3,500 threshold implies a ~41% rise from today's level — ambitious, but possible in a sustained up-cycle.

12%
Next Year · Predicted for 31. Dec 2026