adjusted-vs-unadjusted-price-series-pitfalls SKILL.md skillA
adjusted-vs-unadjusted-price-series-pitfalls from himanshuj16/algo-trading-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add himanshuj16/algo-trading-skills/adjusted-vs-unadjusted-price-series-pitfalls@v1.3.0Pins v1.3.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- himanshuj16/algo-trading-skills
- Path
skills/adjusted-vs-unadjusted-price-series-pitfalls/SKILL.md- Versions recorded
- 5
- Latest version
- v1.3.0, committed Sep 3, 2026
- First version recorded
- Jul 30, 2026
- Size
- 7,438 bytes
- Repository stars
- 50
- License
- Apache-2.0
Use before loading historical OHLCV into a backtest, to declare and verify the adjustment mode; separates raw, split-adjusted and total-return conventions and catches split, dividend and continuity errors in vendor adjustment factors.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
## When to Use Invoke this skill before loading historical OHLCV data into a backtest when corporate actions, vendor adjustment factors, or mixed price-series conventions may affect signals, returns, liquidity, or universe comparisons. Declare the intended `SeriesAdjustmentMode` explicitly: - `UNADJUSTED`: historical prices retain split and cash-dividend ex-date moves; model splits and dividends separately. - `SPLIT_ADJUSTED`: split history is normalized, while cash dividends remain explicit events unless the vendor contract says otherwise. - `TOTAL_RETURN_ADJUSTED`: split and dividend effects are embedded for return analysis; validate the factor methodology and point-in-time availability. - `UNKNOWN`: audit continuity and actions, but do not infer provenance merely because no discontinuity is found. ## When NOT to Use - Do not infer vendor adjustment provenance from a smooth series alone; continuity is not evidence of correct adjustment factors. - Do not treat every ex-dividend price drop as look-ahead bias. A raw price series can legitimately drop by the cash dividend amount; the portfolio must separately receive the dividend. …
Read the whole file at its exact version.
How to install
mdr add himanshuj16/algo-trading-skills/adjusted-vs-unadjusted-price-series-pitfalls@sha256:893533ff218accedThe line at the top of this page pins the label v1.3.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_scbf4ty6zhr453r7)
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Versions
The registry has recorded 5 versions of this file, between Jul 30, 2026 and Sep 3, 2026, about one every 9 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.3.0 latest | 2026-09-03 | 8527a51 | 7,438 B | A | view · diff |
| v1.3.0 | 2026-09-03 | eb7108c | 7,432 B | A | view · diff |
| v1.2.0 | 2026-08-13 | 097e217 | 5,971 B | A | view · diff |
| v1.1.0 | 2026-08-07 | 89d1436 | 2,283 B | A | view · diff |
| v1.1 | 2026-07-30 | dfc60c7 | 2,281 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (7438 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
himanshuj16/algo-trading-skills · 50 stars · license Apache-2.0 · pushed 2026-09-14 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_scbf4ty6zhr453r7 GET https://markdownregistry.com/api/v1/resolve?ref=himanshuj16/algo-trading-skills/adjusted-vs-unadjusted-price-series-pitfalls GET https://markdownregistry.com/api/v1/blob/893533ff218acced4456e9a555e125a3865c21303bd66e6f6dfd3885310ef9c3
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.