Outsample reads the most relevant papers in your corpus and returns
strategies, research programs, and answers backed by the papers it
read. It stress tests its own ideas, and tells you when the evidence
isn't there.
13,935 searchable papers in the corpus.5 research programs in 61 s for $0.09.21 adversarial findings on the last strategy run.
01 the bottleneck
The real bottleneck in research is synthesis.
Reading fifty papers to find three strategy ideas takes weeks, and most ideas die in the backtest.
the workflow
How research ideas become vetted strategies
Recommendations
Give it a focus hint, or leave it blank to span your relevance scored corpus. Either way it produces research ideas worth looking into.
Suggest a project
Take your pick of an idea, and it scaffolds a project around it, with a draft thesis, open questions, and seed papers to start from.
Strategies
From your project, it generates literature backed trade strategies based on the papers you selected, or the ones it pulled.
Devil's Advocate
Adversarially critiques its own strategies. Even its best rated strategies get stress tested before you pursue them.
▮ Outsample·Ask the corpus
CorpusSearch disabled on this view
Ask the corpusHistory
Sonnet retrieves the most-similar papers from the corpus and synthesizes an answer with citations.
Question133 / 2000Mode
Force refresh (skip cache)Ask
Quick mode · 6 citations
What does the literature say about drift bursts in equity index futures, and how have researchers characterised their predictability?
The most directly relevant work in this corpus is the drift burst hypothesis paper, which provides a comprehensive treatment of the phenomenon and its predictability in equity index futures and other markets.
Drift bursts are defined as short-lived explosive price trends that arise from disruptions in liquidity provision. The drift burst hypothesis paper documents that these episodes occur approximately once per week across a broad range of asset classes, including equities, fixed income, currencies, and commodities. The key empirical finding is that the majority of drift bursts are followed by price reversion, meaning they resemble miniature flash-crash events rather than genuine information-driven price discoveries. The authors develop a nonparametric test statistic, computed from high-frequency data at five-second intervals, that can flag incipient drift burst episodes in real time before the full price reversal occurs. The test statistic provides a formal, model-free way to distinguish genuine drift from microstructure noise, and it can be monitored continuously during the trading day.
On predictability, the paper characterises drift bursts as predominantly mean-reverting, with the reversal being asymmetric by sign and volume. Negative drift bursts accompanied by high trading volume exhibit the strongest and most reliable reversals, generating an . The overall magnitude of drift burst episodes ranges from roughly 25 to 200 basis points. This asymmetry, where the direction of the burst and concurrent volume jointly condition the predictability of the subsequent reversion, is central to how researchers characterise the tradeable signal. The theoretical motivation links drift bursts to liquidity dynamics: when market-making capacity is temporarily withdrawn or overwhelmed, prices can drift rapidly in one direction before liquidity is restored and prices snap back.
The broader high-frequency microstructure literature provides supporting context. Work on shows that equity co-movements vary systematically across the trading day, which is relevant to understanding when liquidity conditions are most fragile and drift bursts most likely. Research on demonstrates that the clustering of extreme price moves in time, a phenomenon closely related to drift bursts, can be partially anticipated using the history of trade inter-arrival times and order flow. Jump detection methodology, including the use of high-frequency futures data and extreme value theory to extract tail risk premia, is related in spirit to the nonparametric detection approach used in the drift burst literature, though it focuses on discontinuous jumps rather than the continuous but explosive price paths that define drift bursts.
The VIX futures term structure literature offers a coarser, lower-frequency perspective on anticipating stress episodes: steep contango in VIX futures has been associated with late bull-market phases where fragility may accumulate, potentially creating conditions conducive to drift burst activity, though this link is indirect. Similarly, work on options-implied risk appetite and market liquidity as causal drivers of market troughs is conceptually aligned with the idea that liquidity withdrawal precedes extreme short-term price dislocations.
In summary, the literature characterises drift bursts in equity index futures as regular, liquidity-driven phenomena with statistically predictable reversion properties, especially for negative high-volume episodes. The primary tool for real-time detection is the nonparametric drift burst test statistic applied to five-second high-frequency data, and the primary trading implication is a contrarian liquidity-provision strategy that captures the post-burst reversion premium while carefully accounting for the elevated transaction costs that prevail during extreme microstructure stress.
Cited papers
Real run, 2026-06-11. Quick mode, $0.0501, 34.28 s wall time, 6 papers cited.
▮ Outsample·Disagreement
CorpusSearch disabled on this view
DisagreementHistory
Sonnet identifies paper-vs-paper disagreements in a topic area, the opposing positions, the axis they differ on, and the likely explanation for the split.
Topic93 / 2000Mode
Force refresh (skip cache)Find disagreements
Quick mode · 2 citations · 1 pair
Does cross-sectional momentum decay or persist? Where does the literature genuinely disagree?
Likely explanation
Cited papers
Real run, 2026-06-11. Quick mode, $0.0407, 23.98 s wall time, 2 citations, 1 disagreement pair.
▮ Outsample·Recommendations
CorpusSearch disabled on this view
RecommendationsHistory
Sonnet picks focus topics worth investigating, grounded in your project's literature or a corpus hint. Each card routes into Idea or Strategy Generator, Sweep, or Combiner with one click.
Focus hint64 / 500
How many topics5
312
≈ $0.07–$0.10 · ~60sRecommend topics
5 topics · 100 papers used
Hint: intraday momentum and microstructure-based short-horizon signals
#1
Papers:
Use in:
#2
Papers:
Use in:
#3
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Use in:
#4
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#5
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Use in:
Real run, 2026-06-11. $0.0864, 60.9 s wall time, 5 topics from 100 papers.
▮ Outsample·Strategies
CorpusSearch disabled on this view
StrategiesHistory
Sonnet retrieves the most-similar papers in your corpus and proposes concrete trading strategies, then an adversarial critique tears each one down before you trust it.
Focus / topic
drift bursts and short-horizon microstructure momentum on equity index futures
How many strategies3
Papers retrieved20
Allowed timeframes (bar resolution)
tick1s5s1m5mdaily
≈ $0.12–$0.20 · ~3–5 minGenerate strategies
3 strategies · 20 papers retrieved
Focus: drift bursts and short-horizon microstructure momentum on equity index futures
This strategy exploits the documented regularity that negative drift bursts, short-lived explosive downward price moves in equity index futures, are followed by significant mean reversion (~8 bps on average for ES). A nonparametric drift burst t-statistic is computed in real time from rolling 5-second returns; when it breaches a threshold, a contrarian long is initiated, conditioned on high volume during the burst. Slippage and market impact are the primary risks.
Instruments
Signal
Entry
Exit
Position sizing
Expected behavior
Supporting papers
Devil's Advocate6 flags · 1 fatal
Key test
Scale / capacity
At $250K per contract against a $150K eval account the strategy sizes to 0 contracts; the capital floor needs clarifying. ES depth makes market impact a non-issue once that is resolved.
Statistical validity
Drift bursts are rare; after the high-volume filter the independent-event count may be ~300–600 over 2015–2024, borderline for estimating five free parameters with confidence.
Lookahead bias
The t-statistic window is ambiguous about whether it closes at T or T-5s; using the trigger bar's close as both detector and entry reference price would be a subtle lookahead that is unreachable in live execution.
Overfit / in-sample tuning
Regime dependency
The liquidity-provision thesis assumes forced selling overshoots and reverts; post-2020 0DTE gamma flows can extend moves instead, and on genuine macro-shock days the reversal never materializes.
Implementation gaps
The nonparametric drift burst t-statistic is not a standard platform indicator; it needs custom implementation on tick data plus a nightly-maintained intraday volume profile and level-1 quotes.
Costs / execution
Needs revisionConf 3/5
The first 30-minute return predicts the last 30-minute return in the same direction on ES and NQ. Seven findings, none fatal but several high: the 0.10% open filter and VIX < 30 gate read as fitted, and 0DTE flow has reshaped the closing window since 2020.
AbandonConf 2/5
The speculative inverse of #1: go long after a positive moderate-volume burst, betting on continuation. The Devil's Advocate returns three fatal findings, overfit, costs and statistical validity, and the verdict is unambiguous.
Real run, 2026-06-11. $0.1802, 234.3 s wall time, 3 strategies, 21 adversarial findings. The most expensive tool.
▮ Outsample·Suggest a project
CorpusSearch disabled on this view
Suggest a projectHistory
Sonnet proposes full project shapes (a draft thesis, seed papers, research questions) from corpus content. Click "Create project" on a proposal to materialize it as a real workspace with the seed papers queued for relevance scoring.
Focus hint (optional)88 / 500
How many proposals3
Corpus depth15 papers
How many papers to feed Sonnet after retrieval + filters. Higher = more breadth, more cost.
≈ $0.0495–$0.0743 · ~10–25sGenerate proposals
3 proposals · 15 papers considered
Hint: intraday microstructure signals and short-horizon predictability in equity index futures
#1
#2
#3
Real run, 2026-06-11. $0.0379, 60.2 s wall time, 3 project proposals from 15 papers. The on-ramp: how a research project begins.
02 ask the corpus
Ask your corpus and get citation backed answers
Ask your corpus and it will return multi step answers and a summary backed by citations with similarity scores for the papers it used. If it finds a lack of evidence for an answer, it says so.
03 strategy generator
Solid, testable strategies created from the papers it just read
Each strategy generated includes entry & exit rules, position sizing, a confidence read, and the supporting papers that generated the strategy.
04 adversarial review
Every strategy gets a hostile review before you see it
Our Devil's Advocate checks for lookahead, overfitting, regime dependence, cost drag, and statistical validity before you use your time testing it.
166 themes with thirty or more papers each
market microstructure 347, causal inference 431, portfolio optimization 257, behavioral finance 289.
25 papers, 10 questions a month, 3 full synthesis runs. No card.
Pro
$39 / month. Annual is two months free.
No cap on queries or synthesis. Credit-based: about 375 runs a month on the included $15 of model credit. 1,000 papers.
Team
$129 / month
Five seats, 10,000 papers, $60 of credit included.
Model usage beyond included credit is prepaid, itemized, and previewed before every heavy run. Every query shows what it cost, and nothing can bill past the credit you bought. Full details: /pricing
From the builder
Before this, my research process was a folder of SSRN PDFs and a rough reading plan. Ten or twenty pages on a good day, and half of that was background reading just to understand a paper's premise. After weeks of that produced one strategy, and the strategy failed, I accepted that reading hundreds of papers one at a time was never going to find my ideas.
So I built the tool I wanted: I generate research programs off my corpus, expand the ones worth expanding, trace which papers connect, and find the central ones and the niche ones I would have missed.
Honestly: it runs on a model and on the corpus you give it. I can't promise you a six-figure strategy. It makes the search faster and wider. The judgment is still yours.