Scan: Will Bitcoin have the best performance in 2026?

date	predicted	market price	confidence
2026-08-25	21%	16%	58%
2026-08-17	13%	12%	64%

1. Planner Fable 5 · Fermi decomposition + tool plan

Tools chosen: polymarket_direct polymarket_related kalshi_related crypto fred claude_news code_execution

Sub-questions (Fermi decomposition)

What is the year-to-date 2026 percentage performance of Bitcoin (BTC/USDT), Gold futures (GC00), and the S&P 500 (^SPX) from their respective 2025 year-end closing prices?
In what fraction of past calendar years (e.g., 2014-2025) did Bitcoin outperform both Gold and the S&P 500, and how does Bitcoin's annual return volatility compare?
What are the current Polymarket prices for the sibling markets in this event (Gold best performer, S&P 500 best performer), and do the three probabilities sum to ~100% after de-vigging?
What is the current macro environment (Fed policy path, real rates, inflation expectations, dollar strength) and does it currently favor gold, equities, or risk-on crypto?
What Bitcoin-specific catalysts or headwinds exist for 2026 (ETF flows, halving cycle position, regulation, institutional adoption) that would drive relative outperformance or underperformance?
Is there a comparable Kalshi market on 2026 asset performance, and does its implied probability agree or disagree with Polymarket?

Planner reasoning

This is a three-way horse race between Bitcoin, Gold, and the S&P 500 for 2026 calendar-year performance. Key inputs: the current market price on Polymarket (and any sibling markets for Gold/S&P), year-to-date performance of each asset so far in 2026, Bitcoin's historical base rate of outperforming both assets in a calendar year, and macro drivers (rates, inflation, risk appetite) that favor one asset over another.

2. Research Parallel tool calls

tool	status	time	items	summary
polymarket_direct	OK	0.6s	1	## This Market's Polymarket Data Will Bitcoin have the best performance in 2026? - Current price (probability): 16.50% - 7-day price change: -1.00% - 30-day price change: +2.00% - Total volume: $436,144 (USD notional) - Price range: 10.50% - 22.50% - Data points: 90 days
polymarket_related	OK	3.9s	0	Scanned 100 active Polymarket markets, kept 0 matches. keyword 'gold best performance 2026': 0 markets \| keyword 'S&P 500 best performance 2026': 0 markets \| keyword 'bitcoin 2026': 0 markets
kalshi_related	OK	3.8s	3	3 related markets / summaries. keyword 'bitcoin vs gold': ok \| keyword 'best performing asset 2026': ok \| keyword 'bitcoin price 2026': ok
crypto	OK	0.1s	1	Spot + 365d for 1 asset(s).
fred	OK	6.2s	6	Fetched 6 FRED series (lookback=400d) (via search 'gold price').
claude_news	OK	53.7s	15	Key findings — comparing BTC, gold, and S&P 500 performance/outlook in 2026 - Bitcoin YTD 2026: down sharply from its 2025 peak. BTC hit an all-time high above $126,000 in October 2025, then reached over $126,000 in October 2025, and fell to $60,074 in early 2026 . By late August 2026 it t
code_execution	OK	29.8s	0	## Findings: Probability Bitcoin is the Best-Performing Asset in 2026 Historical Base Rate (2014–2025, n=12 years) - Bitcoin was the top performer in 8 of 12 years (66.7%) - Gold was top in 3 of 12 years (25.0%) — notably in 2018, 2022, and 2025 - S&P 500 was top in only 1 of 12 years (8.3%

3. Evidence Brief Sonnet 5 · 6144 chars

# Event Will Bitcoin be the best-performing asset in 2026 among Bitcoin, Gold, and the S&P 500 (measured by full-year % price change)? # Outcomes to forecast - Yes (Bitcoin best performer) - No (Gold or S&P 500 best performer) # Kalshi market anchor No direct Kalshi price was returned for this ticker in research (kalshi_direct data absent from raw output). Kalshi-related searches surfaced no matching sibling market for "Bitcoin/Gold/S&P best performer 2026." Treat Kalshi price as unknown/unconfirmed; Polymarket is the best available cross-venue anchor (see below). # Sub-question answers 1. **YTD 2026 performance** — As of late Aug/early Sep 2026: BTC spot ~$77.7K, down ~30% over trailing 365 days (crypto tool) and reportedly down ~11-25% YTD from a ~$89.9K open (claude_news). S&P 500 (FRED SP500) at 7,631 (9/1/26) vs ~6,845 year-end 2025 close — up ~9-10% YTD. Gold rallied from a correction low (~$4,000 in July) to ~$4,600 by Aug 25, still well below its Jan 2026 record ($5,602); full-year gold change vs 2025 close not explicitly quantified but described as a strong multi-month rally. 2. **Historical base rate (2014-2025)** — BTC was top performer 8/12 years (66.7%), Gold 3/12 (25%, incl. 2018/2022/2025), S&P 1/12 (8.3%, 2014). [code_execution] 3. **Polymarket sibling markets** — Gold/S&P "best performer 2026" sibling markets were NOT found via polymarket_related search (0 matches); only this BTC market confirmed at 16.5%. Cannot fully de-vig three-way split; implied residual (~83.5%) split between Gold/No. 4. **Macro environment** — Fed funds rate steady at 3.63% (DFF), 10Y yield 4.65-4.75% (rising), breakeven inflation ~2.3-2.35% (T10YIE), dollar index (DTWEXBGS) ~118-119 elevated. News reports Fed has turned "less dovish than expected," with markets shifting from pricing cuts to considering hikes amid persistent inflation — mixed/negative for both gold and risk assets, though central-bank gold demand remains a structural tailwind (100 tonnes/month buying, June 2026). [FRED, claude_news] 5. **BTC-specific catalysts/headwinds** — Deep in back half of halving cycle (last halving April 2024, next ~April 2028), historically a weaker post-euphoria period; BTC hit ATH >$126K Oct 2025 then crashed to ~$60K early 2026, now range-bound ~$77-80K. Analyst/technical sentiment described as "neutral, possibly bad buy" (CoinCodex). [claude_news] 6. **Comparable Kalshi market** — kalshi_related search found no matching market on 2026 BTC/Gold/S&P performance comparison; returned unrelated markets (Goldman CEO, Meta headcount, etc.), indicating either absence of a Kalshi sibling or search-tool mismatch. No cross-check possible. # Key facts (high-confidence, factual) 1. [polymarket_direct] Current Polymarket YES price for BTC-best-performer: 16.5% (range 10.5-22.5% over 90 days; 7d -1pt, 30d +2pt; $436K volume). 2. [FRED] S&P 500 up ~9-10% YTD through early Sep 2026, near record highs. 3. [claude_news] BTC down roughly 11-30% YTD 2026 depending on measurement window, after an Oct 2025 ATH (~$126K) and early-2026 crash (~$60K low). 4. [claude_news] Gold hit record $5,602 (Jan 2026), corrected to ~$4,000 (July), recovered to ~$4,600 (Aug 25) — still net gain vs 2025 close likely, though volatile. 5. [code_execution] Historical base rate strongly favors BTC (8/12 years best), but Monte Carlo forward simulation (accounting for maturing volatility) narrows this to ~51-58% P(BTC best), heavily outlier-dependent (2017). # Cross-market signals - Kalshi related: no direct or comparable sibling market found; anchor unavailable. - Polymarket: 16.5% YES for BTC best — far below historical base rate (66.7%) and below even the conservative Monte Carlo estimate (~50-58%), reflecting real-time observed 2026 underperformance of BTC vs. Gold/S&P. - Sportsbook implied: none available (not applicable to this asset-class market). # Analyst opinions and speculation - Goldman Sachs/UBS/JPM year-end 2026 gold targets ($4,900-$6,000) imply further gold upside remaining, if realized, cementing gold's lead. [claude_news] - Wall Street median S&P 2026 forecast +17% to 7,968 — additional room for further equity gains supporting continued S&P outperformance. [claude_news] - CoinCodex: BTC technical outlook "neutral," bearish-leaning near-term. [claude_news] # Directional lean per outcome - **Yes (BTC best)**: Supported only by historical base rate (66.7% of years) and Monte Carlo tail-risk models (51-58%) assuming a large Q4 rally could still occur; opposed by strong real 2026 YTD data (BTC down double digits while Gold and S&P are both up), unfavorable macro (hawkish Fed, high rates, strong dollar), and late-cycle position (post-halving euphoria already passed). - **No (Gold or S&P best)**: Strongly supported by actual 2026 YTD price action (both assets positive, BTC negative), continued central-bank gold buying, resilient equity earnings, and market pricing (Polymarket 16.5% for BTC = ~83.5% implied for Gold/S&P combined). # Gaps / unknowns - No confirmed Kalshi YES price for this exact ticker was retrieved — must rely on Polymarket as sole cross-venue reference. - No Polymarket sibling markets found for Gold/S&P "best performer," preventing full three-way de-vig check. - Exact YTD BTC/Gold/S&P returns as of a single consistent date not fully reconciled (multiple slightly conflicting % figures across sources). - ~4 months remain in 2026 (through Dec 31) — meaningful volatility could still shift outcome, especially if BTC stages a Q4 rally. # Calibration anchors - Polymarket YES price (best available cross-market anchor): 16.5%. - Historical base rate 2014-2025: BTC best in 8/12 years (66.7%), but this includes outlier years (2017, 2020) not representative of current maturing-market volatility. - Monte Carlo (volatility-adjusted) estimate: ~51-58% P(BTC best), which is a structural upper bound estimate that ignores current in-year performance gap. - Given actual 2026 YTD data (BTC down, Gold/S&P up), true probability likely sits meaningfully below both historical base rate and Monte Carlo estimate, closer to Polymarket's ~15-20% range, absent a major Q4 BTC rally.

4. Forecasters Fable 5 + GPT-5.6 Sol · in parallel

claude-fable-5

60% conf

Yes	15%
No	85%

With ~4 months left in 2026, BTC is down double digits YTD (~$77.7K vs ~$89.9K open) while the S&P is up ~9-10% and gold is likely positive after recovering to ~$4,600 — BTC would need a 30-40+ point relative swing to win. Macro is unfavorable (hawkish Fed, strong dollar, late post-halving cycle) and technical sentiment is neutral-to-bearish. Polymarket, the only cross-venue anchor, prices BTC-best at 16.5%; the historical base rate (66.7%) and Monte Carlo estimates (~51-58%) don't account for the observed in-year gap. I land near the market at 15%, reserving meaningful probability for a Q4 crypto rally given BTC's historical volatility.

gpt-5.6-sol

72% conf

Yes	17%
No	83%

No direct Kalshi price is available, so the 16.5% Polymarket YES price is the best consensus anchor. Current-year performance points strongly to No: Bitcoin is down double digits while the S&P 500 is up roughly 9-10% and gold appears positive, leaving Bitcoin dependent on a major late-year reversal. The historical 8-of-12 base rate and Bitcoin's volatility preserve meaningful comeback potential, but the late post-halving-cycle position, hawkish macro backdrop, and constructive gold and equity outlooks argue against moving materially above the market anchor. I therefore assign Bitcoin a slightly higher 17% chance while keeping most probability on No.

5. Devil's Advocate Sonnet 5 · red-team critique

Both forecasters anchor tightly to Polymarket's 16.5% without addressing the large gap between that market's implied probability and the Monte Carlo estimate (~51-58%); neither explains why they discount the Monte Carlo model so heavily beyond citing "in-year gap," when arguably a 4-month BTC rally of the magnitude needed (30-40+ points relative swing) is not unprecedented given BTC's historical volatility (e.g., 2017, 2020-21 Q4 rallies were exactly this kind of move).

Neither forecast explicitly addresses the scenario where Gold's rally stalls or reverses (it's already corrected once from $5,602 to $4,000 this year) — if Gold gives back gains in Q4, BTC's path to "best" only requires beating a weaker Gold, not necessarily a strong S&P, a compound scenario the brief's binary "Gold or S&P" framing partially obscures.

Both treat the missing Kalshi price as a non-issue and default entirely to Polymarket, but neither flags the risk that Polymarket's $436K volume and BTC-focused audience could carry directional/selection bias (crypto-native traders overweighting negative sentiment or arbitrage-driven mispricing) versus a truly neutral cross-asset trading venue.

Neither forecaster quantifies how much of the "80/20" No case rests on Gold vs. S&P being the eventual winner — since Gold/S&P sibling markets don't exist on Polymarket, the brief admits "cannot fully de-vig three-way split," yet both forecasts implicitly treat No as monolithic without probing whether S&P's continued strength alone (Wall Street median +17% for 2026) could still leave room for a BTC Q4 surge to overtake a decelerating Gold.

Both forecasts sit essentially at the market price (15% and 17%) with only marginal adjustment, yet the brief explicitly notes "meaningful volatility could still shift outcome" with 4 months remaining — given BTC's known propensity for 40-100% moves within months, a probability this close to the anchor may be underconfident about tail-risk asymmetry rather than appropriately hedged.

Neither addresses the specific technical/sentiment detail that "CoinCodex: BTC technical outlook 'neutral, possibly bad buy'" is a fairly weak, potentially unreliable signal to lean on for a full 4-month-ahead call, yet both cite it as reinforcing their bearish stance without noting its low signal quality.

6. Aggregator Fable 5 · final calibrated forecast

16% (66% confidence)

Yes: 16% No: 84%

Both forecasts converge near the Polymarket anchor (16.5%), and the critique does not overturn the core evidence: BTC is down double digits YTD while the S&P is up ~9-10% and gold is likely positive, requiring a 30-40+ point relative swing in 4 months. The Monte Carlo estimate (~51-58%) is a start-of-year structural prior that ignores the observed in-year gap, so heavy discounting is justified. The critique's valid points — BTC's historical capacity for explosive Q4 rallies and possible gold reversal — are real tail scenarios but are already reflected in the ~16% price rather than warranting a large deviation. I finalize at 16% Yes, essentially the market anchor with the two forecasts averaged, keeping meaningful probability for BTC's known volatility.

Pipeline Timing

Total pipeline time: 145.5s

Per-tool research timings shown in the Research section above.