LEAN BULLISH
Net positive whale activity for SNDK. Smart money shows interest, but signals are mixed. Short interest at 11.4% of float — moderate bearish positioning. Insiders are net buyers (21,401 shares bought vs 5,350 sold) — bullish conviction from management. Strong institutional ownership at 87.1% with 9 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)
0.99
NEUTRAL
High Volume Contracts — Vol > 500 (10 contracts)
CALL$16002026-05-155,503
CALL$15002026-05-155,173
PUT$12002026-05-154,155
CALL$18002026-05-154,120
PUT$13002026-05-153,550
CALL$17002026-05-153,463
CALL$15502026-05-152,741
CALL$14002026-05-152,545
CALL$14502026-05-151,992
PUT$11752026-05-221,832
- Put/Call volume ratio: 0.99 (bullish)
- Total options volume: 135,381 (calls 67,974 / puts 67,407)
👤 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.
Recent Insider Transactions (0 buys / 3 sells / 7 grants)
SELLSAYINER NECIP5792026-05-08
SELLSUZUKI MIYUKI3,5002026-02-25
GRANTBRADLEY ALEXANDER R.8632025-12-30
SELLSAYINER NECIP1,2712025-12-03
GRANTSAYINER NECIP9792025-11-18
GRANTCAULFIELD THOMAS9792025-11-18
GRANTKUMAR DEVINDER9792025-11-18
GRANTSHOOK ELLYN J9792025-11-18
GRANTSUZUKI MIYUKI9792025-11-18
GRANTCASSIDY RICHARD B II1,1432025-11-18
- Insider buying: 21,401 shares
- Insider selling: 5,350 shares
- 16 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
87.1%
ACCUMULATION vs DISTRIBUTION
90% ACCUMULATING
10% DISTRIBUTING
NET SHARES FLOW
+11,778,073
Institutional Position Changes (QoQ)
★ NEW POSITIONVanguard Capital Management LLC6.43%NEW+4,763,059
★ NEW POSITIONVanguard Portfolio Management LLC2.42%NEW+1,788,243
★ NEW POSITIONJane Street Group, LLC1.21%NEW+941,507
▲▲ HEAVY BUYGeode Capital Management, LLC2.47%+44.9%+1,133,359
▲▲ HEAVY BUYState Street Corporation3.57%+20.7%+905,053
▲▲ HEAVY BUYArrowstreet Capital, Limited Partnership2.35%+31.3%+828,297
▲▲ HEAVY BUYShaw D.E. & Co., Inc.1.41%+63.1%+809,424
▲ ADDINGBlackrock Inc.7.03%+8.1%+778,646
▲ ADDINGMorgan Stanley2.01%+7.2%+199,501
▬ HOLDFMR, LLC14.50%-1.7%-369,016
ETF & Mutual Fund Flow (2 adding / 1 selling)
▬ HOLDVANGUARD INDEX FUNDS-Vanguard Total Stock Mar-0.1%-2,621
★ NEW POSIVANGUARD INDEX FUNDS-Vanguard 500 Index FundNEW+1,755,738
▼▼ HEAVY SEFidelity Mt. Vernon Street Trust-Fidelity Gro-22.5%-1,015,676
▬ HOLDVANGUARD INDEX FUNDS-Vanguard Small-Cap Index-3.8%-123,768
★ NEW POSIInvesco QQQ Trust, Series 1NEW+1,579,598
▬ HOLDiShares Trust-iShares Core S&P 500 ETF+0.8%+15,617
▬ HOLDFidelity Concord Street Trust-Fidelity 500 In+0.3%+6,574
▬ HOLDSPDR S&P 500 ETF TRUST-State Street SPDR S&P +3.0%+52,144
▬ HOLDVANGUARD WORLD FUND-Vanguard Information Tech+2.5%+32,184
▬ HOLDSELECT SECTOR SPDR TRT-State Street Technolog+2.3%+25,470
- Institutional ownership: 87.1%
- Smart money flow: 9 adding / 0 selling / 1 hold
- Net shares added by institutions: +11,778,073
- Biggest mover: Vanguard Capital Management LLC added 4,763,059 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%+
Elevated short interest — bears have a notable position. Watch for SI trend direction as the key signal.
- Short interest: 11.4% of float
- Days to cover: 0.7
- Short interest MoM: ↑ 34.3%
- Squeeze risk: MODERATE