Technical momentum shows regime shift: MACD histogram flipped to -1.53 from +2.50 in 9 sessions, RSI fell from 63 to 46, and 50 SMA is flattening. Forward valuation requires unrealistic EPS doubling in 12 months—if revenue growth decelerates from +85% to +50%, the forward multiple re-rates to ~24x. The $328 target requires both doubled EPS AND multiple expansion, double-counting optimism. Q3 gross margin guide is modestly below Street (mix-shift at peak margins is a cycle top signal), and inventory +128% YoY to $25.8B signals demand uncertainty. Bull wins legitimate points on TAM expansion, CUDA moat (4M developers, AMD stuck at <10%), extraordinary cash generation ($46B FCF, 114% ROE), and pricing power (15% chip hike). The risk/reward from $209.66 is asymmetric to the downside: -7% to the 200 SMA vs. +10.7% to upper Bollinger, with momentum indicators actively denying upside recovery. Add in hyperscaler ROI scrutiny and custom-silicon substitution (TPU/Trainium/Maia), and the bear framework is analytically stronger—this is NOT a balanced Hold.

POSITION STRATEGY: Reduce existing NVDA exposure by 25-35% from current levels. Use rallies into the $215-220 zone (potential 50 SMA retest / lower Bollinger resistance area) to trim more aggressively. Do not add on weakness at current prices.

POSITION SIZING: Run NVDA at underweight relative to benchmark weight: target ~50-70% of benchmark weight for equal-weighted tech benchmarks; ~80-90% for cap-weighted benchmarks. Keep dry powder for either a confirmed breakdown setup or a clean trend resumption.

RE-ENTRY TRIGGERS: Bear case confirmed: Daily close below $199 with RSI<35 and elevated volume—signal capitulation and reset risk/reward. Scale in 50% of target weight on this trigger. Bull case resumed: Daily close above $232 on volume > 20-day average—invalidate momentum breakdown thesis. Scale in 50% of target weight on this trigger; add remaining on $240+ retest as support.

STOP-LOSS DISCIPLINE: Daily close below $195 (200 SMA) on meaningful volume triggers full exit. Do not average down into a breakdown.

CATALYST MONITORING: Monitor hyperscaler capex guides on MSFT/GOOG/META/AMZN prints (any 10-15% capex reduction is a major red flag for forward NVDA estimates); Q3 earnings focus on gross margin trajectory (is the 'modestly below' guide a one-quarter mix-shift or the start of a trend?) and inventory normalization; China export control updates; custom silicon announcements (TPU/Trainium/Maia roadmaps).

TIME HORIZON: Tactical view 3-6 months. Structural/long-term thesis on NVIDIA remains intact (TAM, CUDA, dominance)—this is a positioning call, not a thesis-rejection call.

AVOID: Do not chase the 'AI inflection point' narrative into strength; do not average down on price weakness without confirmation; do not treat the 200 SMA as automatic support (it's a level, not a floor).

The investment plan makes a compelling analytical case for an Underweight position, anchored in three bear-case pillars I find persuasive: (1) momentum regime shift — MACD histogram has flipped negative (-1.53 from +2.50), RSI has fallen through neutral (63→46), and the 50 SMA is flattening, which is deterioration, not consolidation; (2) the forward valuation trap — a 16x forward P/E requires EPS to double in 12 months, but realistic +50% revenue deceleration yields ~24x re-rated multiple, making the bull's $328 target dependent on double-counted optimism; and (3) inventory build of +128% YoY to $25.8B alongside receivables outpacing revenue is a legitimate demand-normalization signal the bull sidesteps. While I acknowledge the structural bull points (TAM expansion, CUDA moat with 4M developers, $46B FCF, 114% ROE), the synthesis is that this is a great company priced for perfection at the first cracks of a cycle peak. Risk/reward is asymmetric: -7% to the 200 SMA vs. +10.7% to the upper Bollinger, but the upside path requires momentum to reclaim while all three momentum indicators are actively denying that reclaim. The recommended action is to trim 25-35% of existing exposure on rallies into the $215-220 zone (50 SMA retest / lower Bollinger resistance), avoid adding on weakness, and hold dry powder for either a capitulation breakdown below $199 with RSI<35 or a confirmed trend resumption above $232 on volume.

Stop loss: $232.00

Sizing: Trim 25-35% of current NVDA holdings; target 50-70% of equal-weighted tech benchmark weight (or 80-90% of cap-weighted benchmark weight). Hold remaining dry powder for either the bear-case re-entry trigger (daily close <$199 with RSI<35 and elevated volume, scaling in 50% of target weight) or the bull-case re-entry trigger (daily close >$232 on volume >20-day average, scaling in 50% of target weight). Full exit if daily close below $195 on meaningful volume.