| name | fundamental-analysis |
| description | Balance-sheet read, multi-method fair-value range (DCF/Graham/PE), and a fundamental score with red flags for a DSE stock. Use when the user asks for fundamental analysis, intrinsic/fair value, DCF or Graham valuation, balance-sheet health, red flags, "is this stock cheap/overvalued", P/E, ROE, or whether a Dhaka Stock Exchange ticker is a good long-term buy. |
| license | Apache-2.0 |
| compatibility | Prompt-first Agent Skill. Usable with the script absent. Script is Python 3.8+ stdlib-only, no network. |
| metadata | {"author":"stock-buddy","version":"0.2.0","prd_refs":["PRD-001:REQ-003","PRD-001:REQ-027"],"mode":["investment"]} |
Fundamental Analysis
Prompt-first skill. Follow the method with your own reasoning. scripts/analyze.py
is OPTIONAL — run it for exact valuation math; the analysis is valid without it.
Role & objective
You are a value analyst. Goal: read the balance sheet for red flags, estimate a fair-value
range by three methods, and synthesise a fundamental score (−1..+1), confidence and rating.
When to use
"Is LHB undervalued?", "what's the fair value of GP?", "fundamental view", "P/E and ROE
read", "any balance-sheet red flags?". Feed the score into signal-synthesizer; pair with
value-investment-checklist for the long-form scorecard.
Inputs you need
Gather via dse-data-acquisition → fundamentals (object). Used fields: price (or
last ohlcv close), eps_ttm, eps_history[], earnings_growth, book_value_per_share,
debt_to_equity, current_ratio, interest_coverage, free_cash_flow, profit_margin,
roe, pe, sector_median_pe. Include what you have; flag what's missing — never invent.
Method (follow in order)
1. Balance-sheet red flags — raise a flag for each: debt_to_equity > 1.0;
free_cash_flow ≤ 0; latest EPS < prior EPS (declining earnings); current_ratio < 1.0;
interest_coverage < 2.0; profit_margin < 0.
2. Fair value — three methods (use what inputs allow)
- Growth g = max(0, min(
earnings_growth, 0.15)).
- DCF (Graham growth):
eps_ttm × (8.5 + 2·g·100).
- Graham number:
sqrt(22.5 × eps_ttm × book_value_per_share).
- PE-based:
eps_ttm × sector_median_pe (default 15 if unknown).
- Fair value = {low, median, high} across the available method values.
3. Synthesise three components
- Valuation gap = (fair_median − price)/price; component = clamp(gap / 0.5).
- Earnings trend = average % change of
eps_history; component = clamp(avg / 0.15).
- Quality = −0.2 per red flag (cap −0.8); if no flags, +0.10.
Scoring rubric
composite = 0.35·valuation_gap + 0.30·earnings_trend + 0.35·quality (clamp −1..+1).
Rating: gap ≥ 0.30 and 0 flags → strong_buy; gap ≥ 0.10 and ≤1 flag → buy;
gap ≤ −0.15 or ≥3 flags → sell; else hold.
Confidence = clamp(0.5 + 0.25·disclosure − 0.07·(#flags) − 0.1 (if growth pinned at the
0.15 cap) − 0.15 (if no price/fair value), 0.1, 0.9), where disclosure = fraction of the 9
core fields present. Flag limited_disclosure if disclosure < 0.6.
Assumptions to state: discount rate 15% (DSE frontier premium), terminal growth 3%, growth
capped at 15%, sector P/E default 15.
Output (emit this Thinking Card)
{ "skill": "fundamental-analysis", "ticker": "..", "mode": "investment", "as_of": "..",
"score": 0.0, "confidence": 0.0, "rating": "..",
"key_metrics": { "fair_value_low": 0, "fair_value_median": 0, "fair_value_high": 0,
"valuation_gap_pct": 0, "red_flags": [], "pe": 0, "roe": 0, "de": 0 },
"reasoning": ["..."], "flags": ["..."],
"disclaimer": "Educational analysis only. Not financial advice." }
DSE pitfalls
- Few DSE names disclose every field — score on what's present and surface
limited_disclosure
rather than guessing.
- A high DCF-Graham value with a pinned 15% growth is aggressive — say so and cut confidence.
- Fair value is a range, not a price target; pair with technicals before acting.
Optional precision helper
python3 scripts/analyze.py --input data.json --pretty
Returns the exact fair-value methods, gap %, red-flag list, score/confidence/rating. Use it to
check your arithmetic; trust the script if they differ.
Worked example
LHB: price 54.3, eps_ttm 4.17, bvps 17.33, roe 0.241, d/e 0, fcf>0, sector P/E 15 →
PE-based 62.6, Graham 40.3, DCF-Graham 160.5 → median ≈ 62.6, gap +15% → component +0.30;
no red flags → quality +0.10 → composite ≈ 0.44 → buy.
References
Valuation formulas and assumptions: references/VALUATION.md.
Output is educational analysis only, never financial advice.
