Whale Tracker

LEAN BULLISH

Net positive whale activity for MU. Smart money shows interest, but signals are mixed. Insiders are net buyers (1,341,985 shares bought vs 459,425 sold) — bullish conviction from management. Strong institutional ownership at 82.4%, but 3 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)

0.82

NEUTRAL

CALL VOLUME

197,495

PUT VOLUME

160,969

TOTAL VOLUME

358,464

UNUSUAL STRIKES

Unusual Strikes — Vol/OI > 3x (6C / 4P)

TypeStrikeExpiryVolOIRatio

PUT$5022026-03-271001100.0x

PUT$6002026-04-1762610.3x

CALL$6252026-04-246287.8x

PUT$5202026-05-011226.0x

CALL$1752026-03-27515.0x

CALL$3922026-03-273,7467684.9x

CALL$2302026-03-27924.5x

CALL$4002026-03-2714,1253,4754.1x

CALL$3952026-03-2710,1652,5684.0x

PUT$5302026-04-02824.0x

High Volume Contracts — Vol > 500 (10 contracts)

TypeStrikeExpiryVolume

PUT$4002026-03-2715,779

CALL$4002026-03-2714,125

PUT$3802026-03-2712,948

CALL$3952026-03-2710,165

CALL$4202026-03-279,876

CALL$4502026-03-278,461

CALL$4102026-03-278,158

PUT$3702026-03-278,063

CALL$4302026-03-276,526

PUT$3902026-03-276,355

P/C OI RATIO

1.47

TOTAL OI

894,258

CALL OI

361,407

PUT OI

532,851

Put/Call volume ratio: 0.82 (bullish)
Total options volume: 358,464 (calls 197,495 / puts 160,969)
Top unusual: PUT $502.5 exp 2026-03-27 — vol/OI 100.0x
12 unusual strikes detected (7C / 5P)

👤 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.

74% BUY

26% SELL

SHARES BOUGHT (6m)

1,341,985

SHARES SOLD (6m)

459,425

NET INSIDER FLOW

+882,560

FORM 4 FILINGS (90d)

Recent Insider Transactions (1 buys / 9 sells / 0 grants)

TypeInsiderSharesDate

SELLSADANA SUMIT25,0002026-02-02

SELLRAY MICHAEL CHARLES12,2682026-01-27

SELLBHATIA MANISH H26,6232026-01-22

BUYLIU TEYIN MARK23,2002026-01-14

SELLALLEN SCOTT R2,0002026-01-06

SELLARNZEN APRIL S15,0002025-12-22

SELLGOMO STEVEN J5,0002025-12-19

SELLMEHROTRA SANJAY12,5002025-11-07

SELLMURPHY MARK J126,0002025-10-30

SELLMEHROTRA SANJAY22,5002025-10-30

Insider buying: 1,341,985 shares
Insider selling: 459,425 shares
11 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

82.4%

ACCUMULATION vs DISTRIBUTION

30% ACCUMULATING

70% DISTRIBUTING

NET SHARES FLOW

+4,564,588

FLOW SCORE

+0.05

ADDING

SELLING

Institutional Position Changes (QoQ)

ActionInstitution% HeldQoQ ΔShares Δ

▲▲ HEAVY BUYNORGES BANK2.00%+40.3%+6,470,160

▲ ADDINGBlackrock Inc.8.93%+7.3%+6,877,315

▲ ADDINGMorgan Stanley1.45%+5.1%+794,166

▬ HOLDVanguard Group Inc9.45%+1.9%+1,956,975

▬ HOLDState Street Corporation4.68%+2.1%+1,090,021

▬ HOLDGeode Capital Management, LLC2.31%-0.2%-41,663

▬ HOLDFMR, LLC3.51%-1.2%-468,761

▼ TRIMMINGCapital International Investors1.96%-5.6%-1,315,857

▼ TRIMMINGPrimecap Management Company2.20%-16.4%-4,860,530

▼ TRIMMINGCapital World Investors5.17%-9.2%-5,937,238

ETF & Mutual Fund Flow (0 adding / 3 selling)

ActionFundQoQ ΔShares Δ

▬ HOLDVANGUARD INDEX FUNDS-Vanguard Total Stock Mar+0.4%+137,392

▬ HOLDVANGUARD INDEX FUNDS-Vanguard 500 Index Fund+2.5%+693,055

▬ HOLDInvesco QQQ Trust, Series 1-2.9%-734,770

▬ HOLDGROWTH FUND OF AMERICA-1.9%-346,537

▼ TRIMMINGAMERICAN FUNDS FUNDAMENTAL INVESTORS-17.3%-3,810,854

▼▼ HEAVY SEAMERICAN BALANCED FUND-21.1%-3,980,246

▼▼ HEAVY SEVANGUARD CHESTER FUNDS-Vanguard PRIMECAP Fund-20.4%-3,760,704

▬ HOLDiShares Trust-iShares Core S&P 500 ETF-0.9%-137,063

▬ HOLDFidelity Concord Street Trust-Fidelity 500 In+0.5%+66,714

▬ HOLDSPDR S&P 500 ETF TRUST-State Street SPDR S&P -1.5%-205,150

Institutional ownership: 82.4%
Smart money flow: 3 adding / 3 selling / 4 hold
Net shares added by institutions: +4,564,588
Biggest mover: Blackrock Inc. added 6,877,315 shares (+7.3%)

🕶 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

2.6%

DAYS TO COVER

1.0

SI CHANGE (MoM)

↓ 4.6%

SQUEEZE RISK

MINIMAL

SHARES SHORT

29,425,323

PRIOR MONTH

30,844,110

FLOAT SHARES

1,123,505,048

AVG VOLUME

37,111,185

Short interest: 2.6% of float
Days to cover: 1.0
Short interest MoM: ↓ 4.6%
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

[institutional] Institutional ownership: 82.4%
[institutional] Smart money flow: 3 adding / 3 selling / 4 hold
[dark_pool] Short interest: 2.6% of float
[dark_pool] Days to cover: 1.0
[options_flow] Put/Call volume ratio: 0.82 (bullish)
[options_flow] Total options volume: 358,464 (calls 197,495 / puts 160,969)
[insider] Insider buying: 1,341,985 shares
[insider] Insider selling: 459,425 shares