Whale Tracker

LEAN BULLISH

Net positive whale activity for MRVL. Smart money shows interest, but signals are mixed. Insiders are net buyers (1,884,580 shares bought vs 237,313 sold) — bullish conviction from management. Strong institutional ownership at 85.3% with 5 of 10 top holders actively accumulating this quarter.

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)

0.98

NEUTRAL

CALL VOLUME

36,674

PUT VOLUME

35,962

TOTAL VOLUME

72,636

UNUSUAL STRIKES

High Volume Contracts — Vol > 500 (10 contracts)

TypeStrikeExpiryVolume

CALL$2002026-06-184,078

PUT$1682026-05-223,285

PUT$1582026-05-222,071

PUT$1402026-05-221,973

PUT$1702026-05-221,746

PUT$1602026-05-221,704

CALL$1852026-05-221,628

CALL$1902026-05-221,551

PUT$1752026-05-221,484

PUT$1552026-05-221,471

P/C OI RATIO

11.23

TOTAL OI

1,651

CALL OI

135

PUT OI

1,516

Put/Call volume ratio: 0.98 (bullish)
Total options volume: 72,636 (calls 36,674 / puts 35,962)

👤 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.

89% BUY

11% SELL

SHARES BOUGHT (6m)

1,884,580

SHARES SOLD (6m)

237,313

NET INSIDER FLOW

+1,647,267

FORM 4 FILINGS (90d)

Recent Insider Transactions (0 buys / 10 sells / 0 grants)

TypeInsiderSharesDate

SELLMURPHY MATTHEW JOSEPH7,5002026-05-13

SELLKOOPMANS CHRISTOPHER R10,0002026-05-01

SELLCASPER MARK JOHN10,0002026-04-17

SELLBHARATHI SANDEEP66,8922026-04-16

SELLMURPHY MATTHEW JOSEPH7,5002026-04-15

SELLMEINTJES WILLEM A30,0002026-04-15

SELLCASPER MARK JOHN6,9002026-04-06

SELLCASPER MARK JOHN17,8542026-04-02

SELLMURPHY MATTHEW JOSEPH30,0002026-03-26

SELLBHARATHI SANDEEP44,4142026-03-26

Insider buying: 1,884,580 shares
Insider selling: 237,313 shares
15 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

85.3%

ACCUMULATION vs DISTRIBUTION

50% ACCUMULATING

50% DISTRIBUTING

NET SHARES FLOW

+48,223,265

FLOW SCORE

+0.32

ADDING

SELLING

Institutional Position Changes (QoQ)

ActionInstitution% HeldQoQ ΔShares Δ

★ NEW POSITIONVanguard Capital Management LLC4.36%NEW+19,552,612

★ NEW POSITIONVanguard Portfolio Management LLC3.70%NEW+16,609,055

▲▲ HEAVY BUYAmeriprise Financial, Inc.2.32%+21.6%+3,697,025

▲ ADDINGBlackrock Inc.7.11%+6.8%+4,036,909

▲ ADDINGGoldman Sachs Group Inc1.25%+7.5%+782,799

▬ HOLDFMR, LLC14.63%+3.5%+4,438,597

▬ HOLDState Street Corporation2.60%+2.2%+504,626

▬ HOLDGeode Capital Management, LLC1.40%+3.9%+475,871

▬ HOLDFranklin Resources, Inc.1.27%-1.6%-181,340

▼ TRIMMINGBank of America Corporation1.28%-12.9%-1,692,889

ETF & Mutual Fund Flow (5 adding / 1 selling)

ActionFundQoQ ΔShares Δ

▲ ADDINGFidelity Select Portfolios-Select Semiconduct+5.4%+1,878,082

▬ HOLDVANGUARD INDEX FUNDS-Vanguard Total Stock Mar-0.2%-51,577

▬ HOLDInvesco QQQ Trust, Series 1+1.6%+293,643

▬ HOLDFidelity Securities Fund-Fidelity Blue Chip G+0.3%+63,143

▲ ADDINGFidelity Select Portfolios-Technology Portfol+6.2%+978,848

▲▲ HEAVY BUiShares Trust-iShares Semiconductor ETF+30.0%+2,437,715

▲ ADDINGVanEck ETF Trust-VanEck Semiconductor ETF+7.8%+770,896

▲▲ HEAVY BUColumbia Fd.s Series TRT II-Columbia Seligman+24.4%+1,997,033

▼ TRIMMINGVANGUARD INDEX FUNDS-Vanguard Growth Index Fu-9.8%-1,051,733

▬ HOLDVANGUARD INDEX FUNDS-Vanguard Mid-Cap Index F-1.6%-152,556

Institutional ownership: 85.3%
Smart money flow: 5 adding / 1 selling / 4 hold
Net shares added by institutions: +48,223,265
Biggest mover: Vanguard Capital Management LLC added 19,552,612 shares (+100.0%)

🕶 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 % FLOAT

3.8%

DAYS TO COVER

0.9

SI CHANGE (MoM)

↑ 0.0%

SQUEEZE RISK

MINIMAL

SHARES SHORT

28,296,571

PRIOR MONTH

28,303,116

FLOAT SHARES

870,584,225

AVG VOLUME

24,790,065

Short interest: 3.8% of float
Days to cover: 0.9
Squeeze risk: MINIMAL

📡 Data Sources 数据来源

Options Flow

NEUTRAL (80%)

Insider Trading

BULLISH (90%)

Smart Money Flow

LEAN BULLISH (75%)

Short Interest

NEUTRAL (60%)

📋 Summary 综合摘要

[dark_pool] Short interest: 3.8% of float
[dark_pool] Days to cover: 0.9
[institutional] Institutional ownership: 85.3%
[institutional] Smart money flow: 5 adding / 1 selling / 4 hold
[options_flow] Put/Call volume ratio: 0.98 (bullish)
[options_flow] Total options volume: 72,636 (calls 36,674 / puts 35,962)
[insider] Insider buying: 1,884,580 shares
[insider] Insider selling: 237,313 shares