GBDCGolub Capital BDC, Inc.
GBDC Options Overview
bullish flow. No clear edge detected.
REWARDS
RISK ANALYSIS
GBDC Gamma Walls
Value
Is IV priced right?
Measures whether options are cheap, fair, or rich relative to historical and peer
IV Rank 50.0% — elevated vs history
IV/HV 1.00x — IV ≤ HV
Sector percentile 50% — below sector median
Front/Back 1.00x — flat
Put/Call IV 1.00x — normal
ATM IV 0.0% — normal range
Effective IV 189.1% (ATM 0.0% + spread 94.6% + bias) — expensive
Total drag 125.42% (spread 94.57% + slippage 30.85%) — high friction
Vega efficiency 0.00 (vega 0.000 / spread 94.57%) — spread drag
Sentiment
Bullish or bearish?
Analyzes
Conviction-weighted: -1% (neutral) — Raw: +0%
|OI skew| 37.1% — put-heavy
Vol skew +81.8%, OI skew -37.1% — divergent (opposite)
0-DTE 0%, far-OTM 15%, avg DTE 30
OI change +0.0% (5d) — stable
ITM: -100%, ATM: +0%, OTM: +100% — strong bearish (ITM/ATM divergent)
Sector P/C percentile 6% — very bullish vs sector
Activity
Unusual activity?
Detects volume surges,
Volume 0.1x avg — normal
Vol/OI 0.5% — normal turnover
1 day(s) elevated — may be one-day event
OI change +3.5% (5d) — building
Sector activity percentile 17% — quiet vs sector
Large trade volume 0% — mostly retail
Aggressive execution 25% — patient
Conviction -1 (bearish) — mixed
Liquidity
Can I trade efficiently?
Evaluates
Spread 94.6% — wide
OI 4,728 — thin
Volume 22/day — thin
$4.73 to cross — expensive
0 liquid strikes — limited options
Sector spread percentile 0% — much tighter than sector
Depth 284.5 contracts (bid:253.5 ask:31.0) — adequate
Avg slippage 30.85% — poor
Timing
Is now a good time?
Considers earnings proximity,
Slope +0.0% — flat/unclear
IV percentile 50% — neutral
IV kink 0.0pts — no clear event
θ/ν ratio 1.00 — favors mixed
3 liquid expirations — flexible
safe window: No events detected
Spread ratio 1.00x — stable
Flow -1% @ 52% consistency — unclear
Score 30 (ITM 20% + inst 0%) — retail dominated
Directional Strategy Fit
For educational purposes only. Not investment advice.
The Options Desk tracks the move options price into every US earnings report the week of Aug 31, next to how much each stock has actually moved on its past prints — plus the SPY, QQQ and IWM expected ranges and the gamma walls that box them in.