LEAN BULLISH
Net positive whale activity for MRVL. Smart money shows interest, but signals are mixed. Insiders are net buyers (526,124 shares bought vs 6,253 sold) — bullish conviction from management. Strong institutional ownership at 83.6%, but 2 of 10 top holders are distributing.
Action Plan
- Consider building a position on pullbacks
- Set stop-loss below key support level
- Re-evaluate if insider selling accelerates
📈 Options Flow 期权异动
Unusual options volume vs open interest. High volume/OI ratio signals whale positioning. Put/Call ratio indicates directional bias.
PUT / CALL RATIO
0 (Bullish)1.02.0+ (Bearish)
1.07
NEUTRAL
Unusual Strikes — Vol/OI > 3x (1C / 2P)
PUT$802026-04-024,24822718.7x
CALL$712026-04-02824.0x
PUT$922026-04-02306983.1x
High Volume Contracts — Vol > 500 (10 contracts)
PUT$852026-04-176,274
PUT$802026-04-024,248
PUT$702026-04-173,522
PUT$752026-04-172,736
CALL$952026-03-272,699
PUT$652026-04-172,023
CALL$912026-03-271,802
CALL$952026-04-171,676
CALL$1002026-04-171,586
CALL$932026-03-271,560
- Put/Call volume ratio: 1.07 (bearish)
- Total options volume: 56,345 (calls 27,221 / puts 29,124)
- Top unusual: PUT $80.0 exp 2026-04-02 — vol/OI 18.7x
- 3 unusual strikes detected (1C / 2P)
👤 Insider Trading 内部交易
SEC Form 4 filings — officer and director buys/sells in the last 90 days. Net buying is a strong bullish signal.
SHARES BOUGHT (6m)
526,124
Recent Insider Transactions (1 buys / 2 sells / 0 grants)
SELLCASPER MARK JOHN5,0002026-01-05
SELLCASPER MARK JOHN1,2532025-12-05
BUYMURPHY MATTHEW JOSEPH13,6002025-09-25
- Insider buying: 526,124 shares
- Insider selling: 6,253 shares
- 7 Form 4 filings in last 90 days
- Net insider BUYING — bullish signal
🏦 Smart Money Flow 机构资金流向
Quarter-over-quarter position changes from 13F filings. Shows whether institutional investors are accumulating (buying more) or distributing (selling) — the strongest signal of whale conviction.
INSTITUTIONAL OWNERSHIP
83.6%
ACCUMULATION vs DISTRIBUTION
20% ACCUMULATING
80% DISTRIBUTING
NET SHARES FLOW
+4,513,300
Institutional Position Changes (QoQ)
▲ ADDINGState Street Corporation2.61%+7.9%+1,677,754
▲ ADDINGNORGES BANK1.21%+13.8%+1,276,989
▬ HOLDFMR, LLC14.50%+4.2%+5,076,592
▬ HOLDAmeriprise Financial, Inc.1.96%+3.1%+522,022
▬ HOLDGeode Capital Management, LLC1.38%+0.8%+97,290
▬ HOLDBlackrock Inc.6.84%-0.1%-53,874
▬ HOLDFranklin Resources, Inc.1.32%-3.0%-352,337
▬ HOLDVanguard Group Inc9.01%-1.1%-851,796
▼ TRIMMINGGoldman Sachs Group Inc1.19%-10.2%-1,186,451
▼ TRIMMINGBank of America Corporation1.31%-12.9%-1,692,889
ETF & Mutual Fund Flow (2 adding / 1 selling)
▬ HOLDFidelity Select Portfolios-Select Semiconduct+3.8%+1,172,873
▬ HOLDVANGUARD INDEX FUNDS-Vanguard Total Stock Mar-0.2%-51,577
▬ HOLDInvesco QQQ Trust, Series 1-2.9%-562,890
▬ HOLDFidelity Securities Fund-Fidelity Blue Chip G+0.9%+164,211
▬ HOLDFidelity Select Portfolios-Technology Portfol0.0%0
▼ TRIMMINGVANGUARD INDEX FUNDS-Vanguard Growth Index Fu-9.8%-1,051,733
▲ ADDINGVanEck ETF Trust-VanEck Semiconductor ETF+5.8%+524,159
▬ HOLDVANGUARD INDEX FUNDS-Vanguard Mid-Cap Index F-1.6%-152,556
▬ HOLDVANGUARD INDEX FUNDS-Vanguard Extended Market+0.6%+59,088
▲▲ HEAVY BUColumbia Fd.s Series TRT II-Columbia Seligman+48.3%+2,668,613
- Institutional ownership: 83.6%
- Smart money flow: 2 adding / 2 selling / 6 hold
- Net shares added by institutions: +4,513,300
- Biggest mover: FMR, LLC added 5,076,592 shares (+4.2%)
🕶 Short Interest & Dark Pool 做空 & 暗池
Short interest as % of float and days-to-cover. Rising SI = bearish pressure. High SI + decreasing = shorts covering (bullish). Squeeze risk rated by SI level.
SHORT INTEREST (% OF FLOAT)
0%10%20%30%+
- Short interest: 4.5% of float
- Days to cover: 1.9
- Short interest MoM: ↑ 4.3%
- Squeeze risk: MINIMAL