NEUTRAL — WATCH
No clear whale direction for SNDK. Bullish and bearish signals roughly cancel out. Short interest at 11.4% of float — moderate bearish positioning. Insiders are net buyers (21,401 shares bought vs 4,771 sold) — bullish conviction from management. Strong institutional ownership at 82.4% with 8 of 10 top holders actively accumulating this quarter.
Action Plan
- Hold existing positions — no strong directional signal
- Wait for clearer whale activity before adding
- Monitor next earnings for institutional positioning changes
📈 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)
1.28
LEAN BEARISH
High Volume Contracts — Vol > 500 (10 contracts)
CALL$20002026-05-155,920
CALL$16002026-05-153,367
CALL$18002026-05-152,586
PUT$14002026-05-152,477
PUT$13002026-05-152,284
PUT$12002026-05-152,188
CALL$17002026-05-152,076
PUT$11002026-06-181,889
CALL$21002026-05-151,840
PUT$11002026-05-151,796
- Put/Call volume ratio: 1.28 (bearish)
- Total options volume: 130,263 (calls 57,147 / puts 73,116)
👤 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 / 2 sells / 8 grants)
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
GRANTGOECKELER DAVID V85,0252025-09-03
- Insider buying: 21,401 shares
- Insider selling: 4,771 shares
- 14 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
80% ACCUMULATING
20% DISTRIBUTING
NET SHARES FLOW
+4,074,188
Institutional Position Changes (QoQ)
★ NEW POSITIONVanguard Capital Management LLC6.43%NEW+4,763,059
★ NEW POSITIONVanguard Portfolio Management LLC2.42%NEW+1,788,243
▲▲ 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
▲▲ HEAVY BUYNORGES BANK1.48%+24.9%+435,219
▲ ADDINGMorgan Stanley2.01%+7.2%+199,501
▬ HOLDFMR, LLC14.50%-1.7%-369,016
▼▼ HEAVY SELLBlackrock Inc.6.50%-40.0%-6,418,951
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 -1.2%-21,712
▬ HOLDVANGUARD WORLD FUND-Vanguard Information Tech+2.5%+32,184
▬ HOLDSELECT SECTOR SPDR TRT-State Street Technolog-3.3%-37,554
- Institutional ownership: 82.4%
- Smart money flow: 8 adding / 1 selling / 1 hold
- Net shares added by institutions: +4,074,188
- Biggest mover: Blackrock Inc. sold 6,418,951 shares (-40.0%)
🕶 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