Whale Tracker

LEAN BULLISH

Net positive whale activity for STX. Smart money shows interest, but signals are mixed. Insiders are net sellers (255,806 shares sold vs 137,659 bought) — management reducing exposure. Strong institutional ownership at 88.2% with 4 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)

0.64

BULLISH

CALL VOLUME

17,161

PUT VOLUME

10,912

TOTAL VOLUME

28,073

UNUSUAL STRIKES

Unusual Strikes — Vol/OI > 3x (2C / 8P)

TypeStrikeExpiryVolOIRatio

PUT$11202026-07-1748148.0x

PUT$10602026-06-18122340.7x

CALL$10552026-06-1881240.5x

PUT$11002026-06-1834134.0x

PUT$10202026-06-18141528.2x

PUT$10552026-06-1823123.0x

PUT$10502026-06-18112522.4x

CALL$9752026-07-0221121.0x

PUT$10302026-06-18185920.6x

PUT$6252026-06-1817117.0x

High Volume Contracts — Vol > 500 (4 contracts)

TypeStrikeExpiryVolume

CALL$15402026-06-262,818

CALL$11002026-06-182,170

CALL$11502026-06-261,997

CALL$14002026-06-261,394

P/C OI RATIO

0.98

TOTAL OI

97,282

CALL OI

49,090

PUT OI

48,192

Put/Call volume ratio: 0.64 (bullish)
Total options volume: 28,073 (calls 17,161 / puts 10,912)
Top unusual: PUT $1120.0 exp 2026-07-17 — vol/OI 48.0x
84 unusual strikes detected (41C / 43P)

👤 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.

35% BUY

65% SELL

SHARES BOUGHT (6m)

137,659

SHARES SOLD (6m)

255,806

NET INSIDER FLOW

-118,147

FORM 4 FILINGS (90d)

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

TypeInsiderSharesDate

SELLMOSLEY WILLIAM D1,7682026-06-12

SELLMORRIS JOHN CHRISTOPHER1,3642026-06-12

SELLROMANO GIANLUCA9032026-06-12

SELLTEH BAN-SENG9892026-06-12

SELLMOSLEY WILLIAM D2,8542026-06-10

SELLMORRIS JOHN CHRISTOPHER5732026-06-10

SELLROMANO GIANLUCA1,3502026-06-10

SELLTEH BAN-SENG6632026-06-10

SELLARUMUGAVELU SHANKAR1,0002026-06-04

SELLBHATT PRATIK1,0002026-06-02

Insider buying: 137,659 shares
Insider selling: 255,806 shares
25 Form 4 filings in last 90 days
Net insider SELLING — bearish 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

88.2%

ACCUMULATION vs DISTRIBUTION

40% ACCUMULATING

60% DISTRIBUTING

NET SHARES FLOW

+11,359,783

FLOW SCORE

+0.22

ADDING

SELLING

Institutional Position Changes (QoQ)

ActionInstitution% HeldQoQ ΔShares Δ

★ NEW POSITIONVanguard Capital Management LLC6.31%NEW+7,077,836

★ NEW POSITIONVanguard Portfolio Management LLC4.95%NEW+5,547,454

★ NEW POSITIONFMR, LLC3.65%NEW+4,417,242

▲▲ HEAVY BUYCapital Research Global Investors2.56%+27.1%+1,224,098

▬ HOLDGeode Capital Management, LLC2.26%+3.4%+164,042

▬ HOLDState Street Corporation4.16%-0.5%-48,725

▬ HOLDJPMORGAN CHASE & CO2.97%-4.8%-338,700

▼ TRIMMINGMorgan Stanley2.12%-10.5%-558,355

▼ TRIMMINGBlackrock Inc.6.37%-11.4%-1,842,077

▼▼ HEAVY SELLSanders Capital, LLC5.75%-24.9%-4,283,032

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

ActionFundQoQ ΔShares Δ

▬ HOLDVANGUARD INDEX FUNDS-Vanguard Total Stock Mar+3.3%+219,931

▬ HOLDVANGUARD INDEX FUNDS-Vanguard 500 Index Fund+0.9%+49,988

▬ HOLDVANGUARD INDEX FUNDS-Vanguard Mid-Cap Index F+1.3%+61,356

▬ HOLDInvesco QQQ Trust, Series 1+1.6%+73,504

▼▼ HEAVY SEVANGUARD WINDSOR FUNDS-Vanguard Windsor II Fu-23.8%-942,268

▬ HOLDiShares Trust-iShares Core S&P 500 ETF+0.6%+16,265

▬ HOLDFidelity Concord Street Trust-Fidelity 500 In+0.3%+9,746

▬ HOLDSPDR S&P 500 ETF TRUST-State Street SPDR S&P +2.5%+64,937

▲▲ HEAVY BUVANGUARD INDEX FUNDS-Vanguard Growth Index Fu+79.8%+1,086,337

▬ HOLDVANGUARD WORLD FUND-Vanguard Information Tech+2.5%+43,143

Institutional ownership: 88.2%
Smart money flow: 4 adding / 3 selling / 3 hold
Net shares added by institutions: +11,359,783
Biggest mover: Vanguard Capital Management LLC added 7,077,836 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

4.6%

DAYS TO COVER

2.0

SI CHANGE (MoM)

↑ 5.0%

SQUEEZE RISK

MINIMAL

SHARES SHORT

9,050,053

PRIOR MONTH

8,618,343

FLOAT SHARES

223,549,578

AVG VOLUME

3,991,138

Short interest: 4.6% of float
Days to cover: 2.0
Short interest MoM: ↑ 5.0%
Squeeze risk: MINIMAL

📡 Data Sources 数据来源

Options Flow

BULLISH (80%)

Insider Trading

NEUTRAL (90%)

Smart Money Flow

LEAN BULLISH (75%)

Short Interest

NEUTRAL (60%)

📋 Summary 综合摘要

[dark_pool] Short interest: 4.6% of float
[dark_pool] Days to cover: 2.0
[institutional] Institutional ownership: 88.2%
[institutional] Smart money flow: 4 adding / 3 selling / 3 hold
[insider] Insider buying: 137,659 shares
[insider] Insider selling: 255,806 shares
[options_flow] Put/Call volume ratio: 0.64 (bullish)
[options_flow] Total options volume: 28,073 (calls 17,161 / puts 10,912)