Whale Tracker

LEAN BULLISH

Net positive whale activity for MRVL. Smart money shows interest, but signals are mixed. Insiders are net buyers (695,702 shares bought vs 202,313 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)

0.58

LEAN BULLISH

CALL VOLUME

43,920

PUT VOLUME

25,340

TOTAL VOLUME

69,260

UNUSUAL STRIKES

Unusual Strikes — Vol/OI > 3x (3C / 7P)

TypeStrikeExpiryVolOIRatio

CALL$1222026-05-017015140.2x

PUT$1452026-05-152,27117133.6x

CALL$1272026-05-22110255.0x

PUT$802026-04-242,8257537.7x

CALL$1702026-05-155,99918732.1x

PUT$1352026-05-012921420.9x

PUT$842026-04-245132818.3x

PUT$1452026-04-24106617.7x

PUT$692026-04-2424212.0x

PUT$702026-04-241,51312911.7x

High Volume Contracts — Vol > 500 (10 contracts)

TypeStrikeExpiryVolume

CALL$1602026-05-157,040

CALL$1702026-05-155,999

CALL$1502026-04-243,310

PUT$962026-04-243,083

PUT$802026-04-242,825

CALL$1402026-04-242,734

PUT$1452026-05-152,271

CALL$1152026-05-152,142

CALL$1502026-05-012,050

CALL$1402026-05-151,778

P/C OI RATIO

0.99

TOTAL OI

249,513

CALL OI

125,557

PUT OI

123,956

Put/Call volume ratio: 0.58 (bullish)
Total options volume: 69,260 (calls 43,920 / puts 25,340)
Top unusual: CALL $122.0 exp 2026-05-01 — vol/OI 140.2x
16 unusual strikes detected (6C / 10P)

👤 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.

77% BUY

23% SELL

SHARES BOUGHT (6m)

695,702

SHARES SOLD (6m)

202,313

NET INSIDER FLOW

+493,389

FORM 4 FILINGS (90d)

Recent Insider Transactions (0 buys / 8 sells / 0 grants)

TypeInsiderSharesDate

SELLBHARATHI SANDEEP66,8922026-04-16

SELLMEINTJES WILLEM A30,0002026-04-15

SELLCASPER MARK JOHN6,9002026-04-06

SELLCASPER MARK JOHN17,8542026-04-02

SELLBHARATHI SANDEEP44,4142026-03-26

SELLMURPHY MATTHEW JOSEPH30,0002026-03-26

SELLCASPER MARK JOHN5,0002026-01-05

SELLCASPER MARK JOHN1,2532025-12-05

Insider buying: 695,702 shares
Insider selling: 202,313 shares
17 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

+4,533,120

FLOW SCORE

+0.01

ADDING

SELLING

Institutional Position Changes (QoQ)

ActionInstitution% HeldQoQ ΔShares Δ

▲ 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 Inc1.20%-10.0%-1,166,631

▼ TRIMMINGBank of America Corporation1.31%-12.9%-1,692,889

ETF & Mutual Fund Flow (2 adding / 1 selling)

ActionFundQoQ ΔShares Δ

▲ ADDINGFidelity Select Portfolios-Select Semiconduct+8.5%+2,712,628

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

▬ HOLDInvesco QQQ Trust, Series 1-2.4%-445,106

▬ HOLDFidelity Securities Fund-Fidelity Blue Chip G+1.2%+219,212

▬ HOLDFidelity Select Portfolios-Technology Portfol+1.3%+198,895

▬ HOLDVanEck ETF Trust-VanEck Semiconductor ETF+3.4%+327,944

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

▬ 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: +4,533,120
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 % FLOAT

3.8%

DAYS TO COVER

1.3

SI CHANGE (MoM)

↓ 13.6%

SQUEEZE RISK

MINIMAL

SHARES SHORT

28,303,116

PRIOR MONTH

32,740,576

FLOAT SHARES

871,283,665

AVG VOLUME

20,291,621

Short interest: 3.8% of float
Days to cover: 1.3
Short interest MoM: ↓ 13.6%
Squeeze risk: MINIMAL

📡 Data Sources 数据来源

Options Flow

LEAN BULLISH (80%)

Insider Trading

BULLISH (90%)

Smart Money Flow

NEUTRAL (75%)

Short Interest

BULLISH (60%)

📋 Summary 综合摘要

[dark_pool] Short interest: 3.8% of float
[dark_pool] Days to cover: 1.3
[institutional] Institutional ownership: 83.6%
[institutional] Smart money flow: 2 adding / 2 selling / 6 hold
[options_flow] Put/Call volume ratio: 0.58 (bullish)
[options_flow] Total options volume: 69,260 (calls 43,920 / puts 25,340)
[insider] Insider buying: 695,702 shares
[insider] Insider selling: 202,313 shares