Whale Activity Tracker

ALAB

Astera Labs, Inc.
2026-05-27 06:35
$318.72 +3.86% $54.6B
NEUTRAL — WATCH
No clear whale direction for ALAB. Bullish and bearish signals roughly cancel out. Short interest at 10.1% of float — moderate bearish positioning. Insiders are net sellers (2,306,145 shares sold vs 846,602 bought) — management reducing exposure. Strong institutional ownership at 82.8% with 7 of 10 top holders actively accumulating this quarter.
Action Plan
Options Flow
期权
LEAN BEARISH
1.14
Insider
内部交易
BEARISH
Net Sell
Smart Money
机构流向
LEAN BULLISH
70% accum
Short Interest
做空
NEUTRAL
10.1%
NEUTRAL
4.4/10
Whale Activity Rating
Distribution Neutral Accumulation
Options Flow: LEAN BEARISH
Insider: BEARISH
Institutional: LEAN BULLISH
Dark Pool: NEUTRAL
4/4 sources | Confidence: 76%
📈 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)
1.14
LEAN BEARISH
CALL VOLUME
13,038
PUT VOLUME
14,821
TOTAL VOLUME
27,859
UNUSUAL STRIKES
0
High Volume Contracts — Vol > 500 (10 contracts)
TypeStrikeExpiryVolume
CALL$2882026-05-291,469
PUT$2422026-05-291,465
CALL$3402026-06-051,391
PUT$2902026-06-051,348
CALL$3202026-05-291,010
PUT$2902026-05-29906
CALL$3102026-05-29802
CALL$3002026-05-29652
CALL$3252026-06-05533
PUT$2502026-05-29513
P/C OI RATIO
1.62
TOTAL OI
42
CALL OI
16
PUT OI
26
👤 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.
27% BUY
73% SELL
SHARES BOUGHT (6m)
846,602
SHARES SOLD (6m)
2,306,145
NET INSIDER FLOW
-1,459,543
FORM 4 FILINGS (90d)
23
Recent Insider Transactions (0 buys / 9 sells / 1 grants)
TypeInsiderSharesDate
SELLGAJENDRA SANJAY400,0002026-05-21
SELLMAZZARA PHILIP7962026-05-21
SELLMOHAN JITENDRA139,9512026-05-19
SELLGAJENDRA SANJAY280,0002026-05-19
SELLMOHAN JITENDRA95,4442026-05-18
SELLGAJENDRA SANJAY95,4442026-05-18
SELLMAZZARA PHILIP14,0762026-05-18
GRANTMAZZARA PHILIP1312026-05-14
SELLMOHAN JITENDRA139,9512026-05-07
SELLDYCKERHOFF STEFAN A12,4992026-05-07
🏦 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
82.8%
ACCUMULATION vs DISTRIBUTION
70% ACCUMULATING
30% DISTRIBUTING
NET SHARES FLOW
+9,365,924
FLOW SCORE
+0.27
ADDING
7
SELLING
1
Institutional Position Changes (QoQ)
ActionInstitution% HeldQoQ ΔShares Δ
★ NEW POSITIONVanguard Portfolio Management LLC4.26%NEW+3,654,889
★ NEW POSITIONVanguard Capital Management LLC3.70%NEW+3,170,366
★ NEW POSITIONAtreides Management, LP1.96%NEW+1,754,591
▲▲ HEAVY BUYAmundi1.10%+77.9%+823,471
▲▲ HEAVY BUYFred Alger Management, LLC1.50%+33.0%+638,269
▲ ADDINGAlliancebernstein L.P.1.47%+15.4%+334,938
▲ ADDINGState Street Corporation1.94%+7.5%+233,730
▬ HOLDFMR, LLC14.89%+0.8%+195,078
▬ HOLDGeode Capital Management, LLC1.46%+3.3%+79,187
▼ TRIMMINGBlackrock Inc.6.68%-11.7%-1,518,595
ETF & Mutual Fund Flow (2 adding / 1 selling)
ActionFundQoQ ΔShares Δ
▲ ADDINGFidelity Select Portfolios-Select Semiconduct+17.1%+1,082,929
▬ HOLDVANGUARD INDEX FUNDS-Vanguard Total Stock Mar+1.4%+59,894
▬ HOLDVANGUARD INDEX FUNDS-Vanguard Small-Cap Index-2.7%-85,730
▬ HOLDFidelity Securities Fund-Fidelity Blue Chip G+2.0%+50,421
▬ HOLDiShares Trust-iShares Semiconductor ETF-2.5%-61,133
▼ TRIMMINGFidelity Mt. Vernon Street Trust-Fidelity Gro-7.2%-175,885
▬ HOLDFidelity Select Portfolios-Technology Portfol0.0%0
▲ ADDINGVanEck ETF Trust-VanEck Semiconductor ETF+7.8%+130,916
▬ HOLDVANGUARD INDEX FUNDS-Vanguard Small-Cap Growt-1.9%-33,333
▬ HOLDVANGUARD WORLD FUND-Vanguard Information Tech+2.5%+35,407
🕶 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
10.1%
DAYS TO COVER
2.3
SI CHANGE (MoM)
↓ 15.3%
SQUEEZE RISK
MODERATE
SHARES SHORT
13,125,304
PRIOR MONTH
15,495,055
FLOAT SHARES
153,418,676
AVG VOLUME
5,548,749
Elevated short interest — bears have a notable position. Watch for SI trend direction as the key signal.
📡 Data Sources 数据来源
Options Flow
LEAN BEARISH (80%)
Insider Trading
BEARISH (90%)
Smart Money Flow
LEAN BULLISH (75%)
Short Interest
NEUTRAL (60%)
📋 Summary 综合摘要