AMBA
Ambarella, Inc.
NasdaqGSUSDEQUITY
Technology
DELAYED
Neutral
+7/100
Last price
67.94
▼ 0.32 (0.47%)
MARKET · —
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Tool
1D
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Range —
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Open
—
Prev close
68.26
Day high
69.03
Day low
67.03
Volume
833.97K
Market cap
$3.00B
P/E (TTM)
—
52W range
48.30 – 96.69
Trailing performance
Returnvs SPY
1W
-1.15%
-3.1%
1M
+8.03%
+6.9%
3M
-9.10%
-13.6%
6M
+33.24%
+15.1%
YTD
-4.09%
-18.3%
1Y
-19.27%
-35.7%
3Y
+28.12%
-54.1%
5Y
—
—
Price return only. Dividends are not reinvested, so total return on a dividend payer will be higher than shown.
Unusual options activity
Nothing crossed the thresholds in the expiries we scanned.
That is the normal state — most contracts trade well inside their existing open interest.
That is the normal state — most contracts trade well inside their existing open interest.
Contracts trading at or above their open interest, ranked by notional and where the print landed.
Free account
5 more panels on AMBA open with an account.
Options chains and analytics, valuation ratios, insider filings, analyst targets and ownership. No card, no trial, nothing to cancel.
Insider net activity
Net shares
-63.08K
Net selling
Buy transactions
9
32.46K shares
Sell transactions
14
95.54K shares
Net transactions
+23
Buys less sells
Sell : buy shares
2.9 : 1
Mixed
Insider-held shares
1.91M
Total on file
Insider transactions
| Date | Insider | Action | Shares | Value | Held |
|---|---|---|---|---|---|
| Sep 25, 26 | PAISLEY CHRISTOPHER B. Director |
SELL | 250 | $17.69K | Direct |
| Sep 18, 26 | YOUNG JOHN ALEXANDER Chief Financial Officer |
SELL | 1.90K | $127.56K | Direct |
| Sep 8, 26 | HU CHENMING C Director |
STOCK | 3.15K | $0 | Direct |
| Sep 8, 26 | RICHARDSON DAVID JEFFREY Director |
STOCK | 3.15K | $0 | Direct |
| Sep 8, 26 | HON HSIAO-WUEN Director |
STOCK | 3.15K | $0 | Direct |
| Sep 8, 26 | BRYANT GREGORY M. Director |
STOCK | 3.15K | $0 | Direct |
| Sep 8, 26 | SCHWARTING ELIZABETH M Director |
STOCK | 3.15K | $0 | Direct |
| Sep 8, 26 | BREITHAUPT CHANTELLE YVETTE Director |
STOCK | 3.15K | $0 | Direct |
| Sep 8, 26 | PAISLEY CHRISTOPHER B. Director |
STOCK | 3.15K | $0 | Direct |
| Jul 9, 26 | CHEN YUN-LUNG Officer |
SELL | 5.96K | $468.66K | Direct |
| Jul 1, 26 | WANG FENG MING Chief Executive Officer |
SELL | 16.25K | $1.46M | Direct |
| Jul 1, 26 | JU CHI-HONG JOHN Officer |
SELL | 10.00K | $888.40K | Direct |
| Jun 26, 26 | PAISLEY CHRISTOPHER B. Director |
SELL | 250 | $15.50K | Direct |
| Jun 17, 26 | WANG FENG MING Chief Executive Officer |
STOCK | 10.00K | $0 | Direct |
What this is, and what it is not
These are SEC Form 4 filings — officers, directors and 10% owners reporting their own trades in the company's stock. Filing is due within two business days of the transaction, so this lags reality by days, and the provider adds its own lag on top.
A sale is not automatically bearish. Executives sell on scheduled 10b5-1 plans, to cover tax on vesting equity, and to diversify. Purchases with cash are generally the more informative signal, and they are far rarer.
This does not include congressional or senate trading. That comes from STOCK Act disclosures filed with the Senate eFD system and the House Clerk, which this data source does not carry.
Officer and director trades in their own stock, straight from Form 4 filings.
Insider holders
| Name | Relation | Shares held | Latest |
|---|---|---|---|
CHEN YUN-LUNG |
Officer | 60.56K | Sale |
HON HSIAO-WUEN |
Director | 33.93K | Stock Award(Grant) |
HU CHENMING C |
Director | 32.67K | Stock Award(Grant) |
JU CHI-HONG JOHN |
Officer | 163.92K | Sale |
KOHN LESLIE |
Chief Technology Officer | 977.43K | Sale |
LEE CHAN W |
Chief Operating Officer | 157.10K | Sale |
PAISLEY CHRISTOPHER B. |
Director | 43.93K | Sale |
RICHARDSON DAVID JEFFREY |
Director | 31.46K | Stock Award(Grant) |
WANG FENG MING |
Chief Executive Officer | 773.61K | Sale |
YOUNG JOHN ALEXANDER |
Chief Financial Officer | 107.81K | Sale |
Fundamentals
Market cap$3.00B
Enterprise value$2.74B
Revenue (TTM)$417.80M
Gross profit$244.50M
EBITDA$-48.89M
Net income$-56.32M
EPS (TTM)$-1.30
Free cash flow$32.83M
Total cash$272.33M
Total debt$12.64M
Book value / share$14.05
Shares outstanding44.14M
Float42.14M
Short % of float15.63%
Dividend yield0.00%
Beta (5Y)2.38
Valuation & profitability ratios
Trailing P/E—
Forward P/E60.63
PEG ratio2.28
Price / sales—
Price / book4.83
EV / revenue6.56
EV / EBITDA-56.03
Gross margin58.52%
Operating margin-7.53%
Profit margin-13.48%
Return on equity-9.41%
Return on assets-5.23%
Debt / equity2.04
Current ratio2.85
Fourteen ratios including P/E, PEG, EV/EBITDA, margins and return on equity.
Financial statements
| Line item | 2026 | 2025 | 2024 | 2023 | YoY |
|---|---|---|---|---|---|
| Total revenue | $390.70M | $284.87M | $226.47M | $337.61M | +37.2% |
| Operating revenue | $390.70M | $284.87M | $226.47M | $337.61M | +37.2% |
| Cost of revenue | $159.44M | $112.53M | $89.66M | $128.67M | +41.7% |
| Gross profit | $231.27M | $172.33M | $136.82M | $208.93M | +34.2% |
| Research & development | $238.52M | $226.11M | $215.05M | $204.95M | +5.5% |
| Selling, general & admin | $75.27M | $72.82M | $76.33M | $78.24M | +3.4% |
| Total operating expense | $313.79M | $298.93M | $291.38M | $283.19M | +5.0% |
| Operating income | -$82.53M | -$126.59M | -$154.56M | -$74.26M | +34.8% |
| Pre-tax income | -$73.70M | -$117.73M | -$148.53M | -$70.94M | +37.4% |
| Tax provision | $2.17M | -$602.00K | $20.89M | -$5.55M | +460.1% |
| Net income | -$75.86M | -$117.13M | -$169.42M | -$65.39M | +35.2% |
| Net income to common | -$75.86M | -$117.13M | -$169.42M | -$65.39M | +35.2% |
| Basic EPS | -1.78 | -2.84 | -4.25 | -1.70 | +37.3% |
| Diluted EPS | -1.78 | -2.84 | -4.25 | -1.70 | +37.3% |
| EBIT | -$82.53M | -$126.59M | -$154.56M | -$74.26M | +34.8% |
| EBITDA | -$56.94M | -$100.53M | -$129.75M | -$54.32M | +43.4% |
| Basic shares | 42.70M | 41.30M | 39.88M | 38.36M | +3.4% |
| Diluted shares | 42.70M | 41.30M | 39.88M | 38.36M | +3.4% |
| Line item | 2026 | 2025 | 2024 | 2023 | YoY |
|---|---|---|---|---|---|
| Cash & equivalents | $191.02M | $144.62M | $144.91M | $113.54M | +32.1% |
| Cash & short-term investments | $312.57M | $250.26M | $219.93M | $206.86M | +24.9% |
| Accounts receivable | $39.18M | $29.77M | $24.95M | $51.99M | +31.6% |
| Inventory | $52.25M | $34.43M | $29.04M | $40.49M | +51.8% |
| Total current assets | $410.27M | $320.55M | $280.16M | $304.63M | +28.0% |
| Property, plant & equipment | $23.67M | $14.27M | $15.69M | $20.15M | +65.9% |
| Goodwill & intangibles | $361.67M | $350.90M | $358.76M | $362.12M | +3.1% |
| Total assets | $798.60M | $688.97M | $657.65M | $710.20M | +15.9% |
| Total current liabilities | $177.94M | $120.99M | $82.98M | $83.46M | +47.1% |
| Total debt | $13.44M | $5.26M | $5.34M | $8.64M | +155.2% |
| Total liabilities | $203.81M | $127.56M | $97.78M | $104.11M | +59.8% |
| Retained earnings | -$327.92M | -$252.06M | -$134.93M | $34.49M | -30.1% |
| Shareholder equity | $594.79M | $561.41M | $559.87M | $606.09M | +5.9% |
| Working capital | $232.33M | $199.56M | $197.18M | $221.17M | +16.4% |
| Net tangible assets | $233.12M | $210.51M | $201.11M | $243.97M | +10.7% |
| Shares issued | 43.31M | 41.96M | 40.52M | 39.04M | +3.2% |
| Line item | 2026 | 2025 | 2024 | 2023 | YoY |
|---|---|---|---|---|---|
| Net income | -$75.86M | -$117.13M | -$169.42M | -$65.39M | +35.2% |
| Depreciation & amortisation | $25.59M | $26.06M | $24.81M | $19.93M | -1.8% |
| Stock-based compensation | $98.04M | $107.80M | $111.32M | $111.16M | -9.1% |
| Change in working capital | $25.87M | $17.30M | $33.30M | -$16.24M | +49.6% |
| Operating cash flow | $73.52M | $33.84M | $19.02M | $44.09M | +117.3% |
| Capital expenditure | -$15.51M | -$10.38M | -$11.98M | -$15.05M | -49.4% |
| Investing cash flow | -$30.49M | -$40.53M | $7.84M | -$107.30M | +24.8% |
| Share buybacks | -$1.00M | $0 | $0 | $0 | — |
| Financing cash flow | $3.81M | $6.40M | $4.51M | $5.70M | -40.5% |
| Free cash flow | $58.01M | $23.45M | $7.05M | $29.04M | +147.3% |
| End cash position | $191.46M | $144.63M | $144.92M | $113.55M | +32.4% |
| Line item | 2026-07-31 | 2026-04-30 | 2026-01-31 | 2025-10-31 | 2025-07-31 | YoY |
|---|---|---|---|---|---|---|
| Total revenue | $108.13M | $100.36M | $100.87M | $108.45M | $95.51M | +7.7% |
| Operating revenue | $108.13M | $100.36M | $100.87M | $108.45M | $95.51M | +7.7% |
| Cost of revenue | $45.71M | $41.77M | $41.95M | $43.87M | $39.28M | +9.4% |
| Gross profit | $62.42M | $58.59M | $58.91M | $64.59M | $56.23M | +6.5% |
| Research & development | $50.58M | $58.14M | $58.52M | $61.45M | $59.73M | -13.0% |
| Selling, general & admin | $19.98M | $19.86M | $18.83M | $19.38M | $18.49M | +0.6% |
| Total operating expense | $70.56M | $78.00M | $77.34M | $80.83M | $78.22M | -9.5% |
| Operating income | -$8.14M | -$19.42M | -$18.43M | -$16.25M | -$21.99M | +58.1% |
| Pre-tax income | -$6.34M | -$17.33M | -$16.10M | -$14.17M | -$19.74M | +63.4% |
| Tax provision | $352.00K | $760.00K | $337.00K | $933.00K | $253.00K | -53.7% |
| Net income | -$6.69M | -$18.09M | -$16.43M | -$15.11M | -$20.00M | +63.0% |
| Net income to common | -$6.69M | -$18.09M | -$16.43M | -$15.11M | -$20.00M | +63.0% |
| Basic EPS | -0.15 | -0.41 | -0.38 | -0.35 | -0.47 | +63.4% |
| Diluted EPS | -0.15 | -0.41 | -0.38 | -0.35 | -0.47 | +63.4% |
| EBIT | -$8.14M | -$19.42M | -$18.43M | -$16.25M | -$21.99M | +58.1% |
| EBITDA | -$1.67M | -$13.05M | -$12.74M | -$9.73M | -$15.35M | +87.2% |
| Basic shares | 44.01M | 43.61M | 43.18M | 42.87M | 42.55M | +0.9% |
| Diluted shares | 44.01M | 43.61M | 43.18M | 42.87M | 42.55M | +0.9% |
| Line item | 2026-07-31 | 2026-04-30 | 2026-01-31 | 2025-10-31 | 2025-07-31 | YoY |
|---|---|---|---|---|---|---|
| Cash & equivalents | $101.85M | $114.44M | $191.02M | $174.06M | $142.74M | -11.0% |
| Cash & short-term investments | $272.33M | $277.80M | $312.57M | $295.30M | $261.18M | -2.0% |
| Accounts receivable | $37.44M | $39.17M | $39.18M | $42.23M | $42.90M | -4.4% |
| Inventory | $76.92M | $80.36M | $52.25M | $39.16M | $33.81M | -4.3% |
| Total current assets | $394.02M | $405.19M | $410.27M | $383.67M | $343.87M | -2.8% |
| Property, plant & equipment | $22.98M | $24.10M | $23.67M | $23.49M | $13.59M | -4.6% |
| Goodwill & intangibles | $360.30M | $362.65M | $361.67M | $341.58M | $345.50M | -0.6% |
| Total assets | $780.21M | $794.84M | $798.60M | $751.89M | $706.43M | -1.8% |
| Total current liabilities | $138.37M | $166.96M | $177.94M | $144.45M | $125.94M | -17.1% |
| Total debt | $12.64M | $13.27M | $13.44M | $13.65M | $3.44M | -4.7% |
| Total liabilities | $159.89M | $189.02M | $203.81M | $161.78M | $129.91M | -15.4% |
| Retained earnings | -$352.70M | -$346.01M | -$327.92M | -$311.49M | -$296.38M | -1.9% |
| Shareholder equity | $620.32M | $605.82M | $594.79M | $590.11M | $576.52M | +2.4% |
| Working capital | $255.65M | $238.23M | $232.33M | $239.21M | $217.93M | +7.3% |
| Net tangible assets | $260.02M | $243.17M | $233.12M | $248.53M | $231.02M | +6.9% |
| Shares issued | 44.14M | 43.86M | 43.31M | 43.05M | 42.67M | +0.6% |
| Line item | 2026-07-31 | 2026-04-30 | 2026-01-31 | 2025-10-31 | 2025-07-31 | YoY |
|---|---|---|---|---|---|---|
| Net income | -$6.69M | -$18.09M | -$16.43M | -$15.11M | -$20.00M | +63.0% |
| Depreciation & amortisation | $6.47M | $6.37M | $5.69M | $6.51M | $6.64M | +1.7% |
| Stock-based compensation | $22.70M | $21.89M | $20.98M | $25.74M | $25.19M | +3.7% |
| Change in working capital | -$22.79M | -$35.62M | $8.36M | $17.32M | -$6.36M | +36.0% |
| Operating cash flow | -$260.00K | -$25.63M | $18.90M | $34.31M | $5.51M | +99.0% |
| Capital expenditure | -$6.82M | -$3.96M | -$3.92M | -$2.90M | -$4.12M | -72.4% |
| Investing cash flow | -$14.65M | -$46.29M | -$4.39M | -$5.00M | -$4.95M | +68.3% |
| Share buybacks | $0 | -$2.44M | $0 | $0 | $0 | +100.0% |
| Financing cash flow | $2.32M | -$4.66M | $2.46M | $2.01M | $894.00K | +149.8% |
| Free cash flow | -$7.08M | -$29.58M | $14.97M | $31.41M | $1.38M | +76.1% |
| End cash position | $102.29M | $114.89M | $191.46M | $174.50M | $143.18M | -11.0% |
Options analytics
Put / call volume
0.41
Call-heavy session
Put / call open interest
—
Positioning, not flow
Max pain
45.00
-33.8% from spot
ATM implied vol
0.4%
Nearest strike to spot
Skew (10% OTM)
0.0%
Calls bid over puts
Call volume
1.20K
Contracts, this expiry
Put volume
497
Contracts, this expiry
Heaviest call OI
55.00
0 contracts
Heaviest put OI
45.00
0 contracts
Max pain is the strike at which the largest dollar value of open contracts expires worthless. It describes current positioning; it is not a forecast and it moves as open interest changes.
Put/call ratios, max pain, implied volatility skew and where open interest is concentrated.
Earnings
Reported vs expected · EPS
| Quarter | Est. | Actual | Surprise |
|---|---|---|---|
| Jul 2026 | 0.17 | 0.18 | +5.3% |
| Apr 2026 | 0.10 | 0.11 | +5.4% |
| Jan 2026 | 0.10 | 0.13 | +26.7% |
| Oct 2025 | 0.21 | 0.27 | +29.6% |
Forward consensus
| Period | EPS | Analysts | Revenue | Growth |
|---|---|---|---|---|
| Current quarter | 0.31 | 12 | $119.75M | +10.4% |
| Next quarter | 0.19 | 12 | $112.59M | +11.6% |
| Current year | 0.80 | 12 | $441.03M | +12.9% |
| Next year | 1.12 | 13 | $499.90M | +13.4% |
Analyst targets & ownership
Mean target$89.36
High target$120.00
Low target$65.00
Implied upside31.53%
Analyst count11
ConsensusNONE
Strong buy / Buy2 / 4
Hold8
Sell / Strong sell0 / 0
Held by insiders4.32%
Held by institutions86.45%
Institutions holding473
Price targets, consensus spread, insider and institutional ownership.
Moving averages & technicals
SMA 10
69.22
-1.85% from price
SMA 20
67.84
+0.15% from price
SMA 50
72.11
-5.78% from price
SMA 100
72.71
-6.56% from price
SMA 200
68.09
-0.22% from price
EMA 12
68.58
-0.93% from price
EMA 26
68.92
-1.43% from price
EMA 50
70.00
-2.94% from price
RSI (14)
47.5
Neutral
MACD (12,26,9)
-0.34
Hist 0.33
ATR (14)
3.64
5.35% of price
Realised vol 30D
49.6%
Annualised
Bollinger upper
72.27
20, 2σ
Bollinger lower
63.41
20, 2σ
50 / 200 cross
Golden
72.11 vs 68.09
Trend bias
Below 200
-0.22%
Options chain
Calls
| Strike | Last | Bid | Ask | Vol | OI | IV |
|---|---|---|---|---|---|---|
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
Puts
| Strike | Last | Bid | Ask | Vol | OI | IV |
|---|---|---|---|---|---|---|
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
Every listed expiry, both sides of the book, with volume, open interest and implied volatility.
Risk profile
Beta vs SPY
2.78
More volatile than market
Correlation to SPY
0.48
Loosely linked
Realised vol 30D
49.6%
Annualised
Market vol 1Y
13.0%
SPY, annualised
Max drawdown 1Y
-49.1%
Peak to trough
Max drawdown 5Y
-81.7%
Peak to trough
ATR 14
3.64
5.35% of price
Beta (reported)
2.38
5Y monthly, from filing
Short interest
Shares short
5.71M
Prior 4.07M
Change vs prior
+40.2%
Shorts adding
% of float
15.63%
Elevated
% of shares out
12.93%
Against total outstanding
Days to cover
3.3
Liquid
Float
42.14M
Freely tradeable shares
Exchanges publish short interest twice a month with a settlement lag, so this is roughly two weeks behind. Days to cover divides shares short by average daily volume — it estimates how long covering would take, not whether it will happen.
Rating changes
| Date | Firm | Action | From | To |
|---|---|---|---|---|
| Sep 16, 26 | Rosenblatt | MAINTAINED | Buy | Buy |
| Sep 4, 26 | Roth Capital | MAINTAINED | Neutral | Neutral |
| Sep 4, 26 | Stifel | MAINTAINED | Buy | Buy |
| Sep 4, 26 | B of A Securities | MAINTAINED | Neutral | Neutral |
| Sep 4, 26 | Rosenblatt | MAINTAINED | Buy | Buy |
| Aug 31, 26 | Rosenblatt | MAINTAINED | Buy | Buy |
| May 29, 26 | B of A Securities | MAINTAINED | Neutral | Neutral |
| May 29, 26 | Susquehanna | MAINTAINED | Positive | Positive |
| May 29, 26 | Rosenblatt | MAINTAINED | Buy | Buy |
| May 26, 26 | Rosenblatt | MAINTAINED | Buy | Buy |
| Mar 23, 26 | Rosenblatt | MAINTAINED | Buy | Buy |
| Nov 26, 25 | B of A Securities | MAINTAINED | Neutral | Neutral |
Dividends & splits
Forward rate—
Forward yield0.00%
5-year avg yield—
Payout ratio0.00%
Ex-dividend date—
Next pay date—
Last split—
Split date—
SEC filings
Periodic Financial Reports
10-Q · 2026-09-04
Corporate Changes & Voting Matters
8-K · 2026-09-03
Offering Registrations
S-8 · 2026-08-03
Corporate Changes & Voting Matters
8-K · 2026-07-01
Proxy Statements
DEFA14A · 2026-06-10
Periodic Financial Reports
10-Q · 2026-06-02
Specialized Disclosure Report filed pursuant to Section 1502 of the Dodd-Frank Wall Street Reform and Consumer Protection Act relating to the use of conflict minerals (Rule 13p-1)
SD · 2026-05-29
Corporate Changes & Voting Matters
8-K · 2026-05-28
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PRIVATE STRATEGY · BY QUALIFICATION
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