Whale Tracker

STRONG BUY SIGNAL

Whales are aggressively accumulating MRVL. Multiple signals confirm institutional conviction. Insiders are net buyers (2,077,298 shares bought vs 240,060 sold) — bullish conviction from management. Strong institutional ownership at 85.5% with 6 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)

0.67

BULLISH

CALL VOLUME

139,673

PUT VOLUME

93,708

TOTAL VOLUME

233,381

UNUSUAL STRIKES

Unusual Strikes — Vol/OI > 3x (5C / 1P)

TypeStrikeExpiryVolOIRatio

CALL$4702026-07-104452815.9x

PUT$3582026-06-12616.0x

CALL$2752026-06-124,2911,1243.8x

CALL$2582026-06-125211553.4x

CALL$2622026-06-121,1833573.3x

CALL$2652026-06-187432433.1x

High Volume Contracts — Vol > 500 (10 contracts)

TypeStrikeExpiryVolume

PUT$1302026-06-1821,577

CALL$3002026-06-1215,273

CALL$3002026-06-1812,247

CALL$2902026-06-128,722

CALL$2702026-06-128,183

PUT$2202026-06-125,125

PUT$2502026-06-124,518

CALL$2802026-06-124,514

CALL$2752026-06-124,291

CALL$2702026-06-183,921

P/C OI RATIO

1.13

TOTAL OI

1,113,945

CALL OI

524,011

PUT OI

589,934

Put/Call volume ratio: 0.67 (bullish)
Total options volume: 233,381 (calls 139,673 / puts 93,708)
Top unusual: CALL $470.0 exp 2026-07-10 — vol/OI 15.9x
6 unusual strikes detected (5C / 1P)

👤 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.

90% BUY

10% SELL

SHARES BOUGHT (6m)

2,077,298

SHARES SOLD (6m)

240,060

NET INSIDER FLOW

+1,837,238

FORM 4 FILINGS (90d)

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

TypeInsiderSharesDate

SELLMEINTJES WILLEM A4,0002026-05-15

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

Insider buying: 2,077,298 shares
Insider selling: 240,060 shares
19 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

85.5%

ACCUMULATION vs DISTRIBUTION

60% ACCUMULATING

40% DISTRIBUTING

NET SHARES FLOW

+50,797,078

FLOW SCORE

+0.34

ADDING

SELLING

Institutional Position Changes (QoQ)

ActionInstitution% HeldQoQ ΔShares Δ

★ NEW POSITIONVanguard Capital Management LLC4.47%NEW+19,552,612

★ NEW POSITIONVanguard Portfolio Management LLC3.80%NEW+16,609,055

▲▲ HEAVY BUYAmeriprise Financial, Inc.2.38%+21.6%+3,697,025

▲ ADDINGBlackrock Inc.7.30%+6.8%+4,036,909

▲ ADDINGVan Eck Associates Corporation1.23%+8.9%+880,924

▲ ADDINGGoldman Sachs Group Inc1.29%+7.5%+782,799

▬ HOLDFMR, LLC15.00%+3.5%+4,438,597

▬ HOLDState Street Corporation2.67%+2.2%+504,626

▬ HOLDGeode Capital Management, LLC1.44%+3.9%+475,871

▬ HOLDFranklin Resources, Inc.1.30%-1.6%-181,340

ETF & Mutual Fund Flow (2 adding / 3 selling)

ActionFundQoQ ΔShares Δ

▬ HOLDVANGUARD INDEX FUNDS-Vanguard Total Stock Mar+2.3%+620,473

▼▼ HEAVY SEFidelity Select Portfolios-Select Semiconduct-34.6%-12,619,954

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

▼▼ HEAVY SEFidelity Select Portfolios-Technology Portfol-28.0%-4,672,269

▼▼ HEAVY SEFidelity Securities Fund-Fidelity Blue Chip G-36.5%-6,615,542

▬ HOLDiShares Trust-iShares Semiconductor ETF+3.4%+360,312

▲ ADDINGVanEck ETF Trust-VanEck Semiconductor ETF+8.8%+862,133

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

▬ HOLDVANGUARD INDEX FUNDS-Vanguard Growth Index Fu+1.1%+101,643

▬ HOLDVANGUARD INDEX FUNDS-Vanguard Extended Market+4.7%+439,513

Institutional ownership: 85.5%
Smart money flow: 6 adding / 0 selling / 4 hold
Net shares added by institutions: +50,797,078
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

4.7%

DAYS TO COVER

1.3

SI CHANGE (MoM)

↑ 24.5%

SQUEEZE RISK

MINIMAL

SHARES SHORT

35,215,842

PRIOR MONTH

28,296,571

FLOAT SHARES

871,956,900

AVG VOLUME

32,300,741

Short interest: 4.7% of float
Days to cover: 1.3
Short interest MoM: ↑ 24.5%
Squeeze risk: MINIMAL

📡 Data Sources 数据来源

Options Flow

BULLISH (80%)

Insider Trading

BULLISH (90%)

Smart Money Flow

LEAN BULLISH (75%)

Short Interest

NEUTRAL (60%)

📋 Summary 综合摘要

[dark_pool] Short interest: 4.7% of float
[dark_pool] Days to cover: 1.3
[institutional] Institutional ownership: 85.5%
[institutional] Smart money flow: 6 adding / 0 selling / 4 hold
[options_flow] Put/Call volume ratio: 0.67 (bullish)
[options_flow] Total options volume: 233,381 (calls 139,673 / puts 93,708)
[insider] Insider buying: 2,077,298 shares
[insider] Insider selling: 240,060 shares