LEAN BEARISH
Whales showing caution on STX. Distribution signals outweigh accumulation. Insiders are net sellers (235,463 shares sold vs 125,745 bought) — management reducing exposure. Strong institutional ownership at 88.8% with 4 of 10 top holders actively accumulating this quarter.
Action Plan
- Avoid new long positions until whale activity shifts
- Insider selling suggests management has near-term concerns
- Consider trimming if position size is large
- Set alerts for insider buying or SI decrease as reversal signals
📈 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)
1.43
BEARISH
High Volume Contracts — Vol > 500 (2 contracts)
CALL$6502026-06-181,760
PUT$8002026-05-29635
- Put/Call volume ratio: 1.43 (bearish)
- Total options volume: 21,389 (calls 8,787 / puts 12,602)
👤 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.
SHARES BOUGHT (6m)
125,745
Recent Insider Transactions (0 buys / 10 sells / 0 grants)
SELLMOSLEY WILLIAM D30,0002026-05-20
SELLTEH BAN-SENG15,5602026-05-14
SELLROMANO GIANLUCA1,9022026-05-07
SELLROMANO GIANLUCA22,4882026-05-06
SELLTILENIUS STEPHANIE SCHEAR1,5802026-05-05
SELLLEE JAMES CI6972026-05-04
SELLMORRIS JOHN CHRISTOPHER5,6262026-05-04
SELLMOSLEY WILLIAM D20,0002026-04-01
SELLMOSLEY WILLIAM D24,5842026-03-19
SELLMORRIS JOHN CHRISTOPHER1122026-03-13
- Insider buying: 125,745 shares
- Insider selling: 235,463 shares
- 23 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
88.8%
ACCUMULATION vs DISTRIBUTION
40% ACCUMULATING
60% DISTRIBUTING
NET SHARES FLOW
+11,618,120
Institutional Position Changes (QoQ)
★ 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%-5.9%-300,018
▼ TRIMMINGBlackrock Inc.6.37%-11.4%-1,842,077
▼▼ HEAVY SELLSanders Capital, LLC5.75%-24.9%-4,283,032
ETF & Mutual Fund Flow (0 adding / 1 selling)
▬ HOLDVANGUARD INDEX FUNDS-Vanguard Total Stock Mar+0.1%+5,360
▬ HOLDVANGUARD INDEX FUNDS-Vanguard 500 Index Fund+4.7%+245,093
▬ HOLDInvesco QQQ Trust, Series 1+1.6%+73,504
▬ HOLDVANGUARD INDEX FUNDS-Vanguard Mid-Cap Index F-1.2%-55,979
▼▼ HEAVY SEVANGUARD WINDSOR FUNDS-Vanguard Windsor II Fu-23.8%-942,268
▬ HOLDiShares Trust-iShares Core S&P 500 ETF+0.6%+17,658
▬ HOLDFidelity Concord Street Trust-Fidelity 500 In+0.4%+12,200
▬ HOLDSPDR S&P 500 ETF TRUST-State Street SPDR S&P +3.0%+77,047
▬ HOLDVANGUARD INDEX FUNDS-Vanguard Mid-Cap Growth -1.9%-34,413
▬ HOLDVANGUARD WORLD FUND-Vanguard Information Tech+2.5%+43,143
- Institutional ownership: 88.8%
- Smart money flow: 4 adding / 3 selling / 3 hold
- Net shares added by institutions: +11,618,120
- 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 interest: 4.8% of float
- Days to cover: 2.0
- Short interest MoM: ↑ 10.2%
- Squeeze risk: MINIMAL