Whale Activity Tracker

ALAB

Astera Labs, Inc.
2026-05-20 06:33
$244.26 +13.30% $41.9B
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 (1,683,730 shares sold vs 846,471 bought) — management reducing exposure. Strong institutional ownership at 82.7% with 7 of 10 top holders actively accumulating this quarter.
Action Plan
Options Flow
期权
NEUTRAL
Insider
内部交易
NEUTRAL
Net Sell
Smart Money
机构流向
LEAN BULLISH
70% accum
Short Interest
做空
NEUTRAL
10.1%
NEUTRAL
5.4/10
Whale Activity Rating
Distribution Neutral Accumulation
Insider: NEUTRAL
Institutional: LEAN BULLISH
Dark Pool: NEUTRAL
3/4 sources | Confidence: 75%
👤 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.
33% BUY
67% SELL
SHARES BOUGHT (6m)
846,471
SHARES SOLD (6m)
1,683,730
NET INSIDER FLOW
-837,259
FORM 4 FILINGS (90d)
20
Recent Insider Transactions (0 buys / 8 sells / 2 grants)
TypeInsiderSharesDate
GRANTMAZZARA PHILIP1312026-05-14
SELLMOHAN JITENDRA139,9512026-05-07
SELLDYCKERHOFF STEFAN A12,4992026-05-07
SELLGAJENDRA SANJAY230,6392026-05-07
SELLGAJENDRA SANJAY40,2532026-05-07
GRANTLYNCH DESMOND M49,5842026-05-01
SELLMOHAN JITENDRA335,8812026-04-20
SELLDYCKERHOFF STEFAN A24,9982026-04-20
SELLMOHAN JITENDRA2,9672026-04-15
SELLMOHAN JITENDRA123,7502026-04-10
🏦 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
82.7%
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
152,681,622
AVG VOLUME
5,307,129
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
NO DATA
Insider Trading
NEUTRAL (90%)
Smart Money Flow
LEAN BULLISH (75%)
Short Interest
NEUTRAL (60%)
📋 Summary 综合摘要