688028.SS
Beijing Worldia Diamond Tools Co.,Ltd.
ShanghaiCNYEQUITY
Industrials
DELAYED
Last price
88.60
▼ 2.84 (3.11%)
MARKET · —
Price
Chart style
Interval
Intraday intervals only cover recent history. The site picks the finest interval the range allows.
Overlays
Session levels
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Both series are rebased to 0% at the left edge, so the lines show relative performance rather than price.
Tool
1D
—
H —
L —
Range —
Vol —
vs
Drag pan · Pinch zoom · Hold crosshair · pick a tool then drag to draw
Open
91.90
Prev close
91.44
Day high
91.99
Day low
85.00
Volume
4.24M
Market cap
$13.26B
P/E (TTM)
129.16
52W range
24.00 – 158.50
Day trading desk
Gap from prior close
+0.50%
Prior close 91.44
VWAP
87.26
+1.53% from price
Relative volume
0.89×
Normal
Session range
8.16%
85.00 – 91.94
Position in range
52%
Mid range
ATR (14D)
6.79
7.67% of price
Prior day high
93.82
PDH
Prior day low
86.80
PDL
Bid / ask spread
—
Quote not published
Session volume
6.75M
Avg 7.60M
VWAP and the session figures are computed from the delayed intraday series on this page, so they lag the live tape and will not match a broker's real-time VWAP exactly. Turn on Prior day H/L/C, Opening range and Volume profile in the chart's Studies menu to see these levels drawn on price.
Trailing performance
Returnvs SPY
1W
-8.56%
-7.2%
1M
+9.73%
+6.0%
3M
-31.80%
-34.9%
6M
-0.26%
-11.3%
YTD
+36.09%
+23.8%
1Y
+257.91%
+237.9%
3Y
+299.41%
+225.2%
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 688028.SS 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
0
Net selling
Buy transactions
0
0 shares
Sell transactions
0
—
Net transactions
0
Buys less sells
Sell : buy shares
—
Not enough filings
Insider-held shares
73.70M
Total on file
Insider transactions
| Date | Insider | Action | Shares | Value | Held |
|---|---|---|---|---|---|
| Mar 4, 26 | Fan (Xiaoyan) Director |
SELL | 22.00K | $272.63K | Direct |
| Mar 4, 26 | Fan (Xiaoyan) Director |
SELL | 22.00K | $272.63K | Direct |
| Jan 27, 26 | Zhang (Zong Chao) Director |
SELL | 82.31K | $961.32K | Direct |
| Jan 27, 26 | Zhang (Zong Chao) Director |
SELL | 82.31K | $961.32K | Direct |
| Jan 26, 26 | Zhang (Shifeng) Other Executive |
SELL | 6.00K | $69.41K | Direct |
| Jan 26, 26 | Zhang (Shifeng) Other Executive |
SELL | 6.00K | $69.41K | Direct |
| Jan 23, 26 | Tang (Wenlin) Director |
SELL | 43.14K | $471.58K | Direct |
| Jan 23, 26 | Tang (Wenlin) Director |
SELL | 43.14K | $471.58K | Direct |
| Nov 6, 25 | Chen (Ji Feng) Chairman of the Board |
SELL | 1.34M | $7.69M | Direct |
| Nov 6, 25 | Chen (Ji Feng) Chairman of the Board |
SELL | 1.34M | $7.69M | 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 (Ji Feng) |
Chairman of the Board | 50.55M | Sale |
Fan (Xiaoyan) |
Director | 67.71K | Sale |
Tang (Wenlin) |
Director | 505.71K | Sale |
Zhang (Shifeng) |
Other Executive | 27.36K | Sale |
Zhang (Zong Chao) |
Director | 423.55K | Sale |
Fundamentals
Market cap$13.26B
Enterprise value$13.69B
Revenue (TTM)$796.78M
Gross profit$329.92M
EBITDA$227.69M
Net income$101.76M
EPS (TTM)$0.68
Free cash flow$-1.17M
Total cash$239.07M
Total debt$122.90M
Book value / share$13.39
Shares outstanding150.95M
Float85.17M
Short % of float—
Dividend yield0.27%
Beta (5Y)1.41
Valuation & profitability ratios
Trailing P/E129.16
Forward P/E—
PEG ratio—
Price / sales—
Price / book6.56
EV / revenue17.18
EV / EBITDA60.11
Gross margin41.41%
Operating margin20.69%
Profit margin12.77%
Return on equity5.08%
Return on assets3.20%
Debt / equity6.08
Current ratio3.32
Fourteen ratios including P/E, PEG, EV/EBITDA, margins and return on equity.
Financial statements
| Line item | 2025 | 2024 | 2023 | 2022 | YoY |
|---|---|---|---|---|---|
| Total revenue | $753.70M | $678.54M | $602.92M | $414.32M | +11.1% |
| Operating revenue | $753.70M | $678.54M | $602.92M | $414.32M | +11.1% |
| Cost of revenue | $432.70M | $365.71M | $330.93M | $222.76M | +18.3% |
| Gross profit | $321.01M | $312.83M | $271.98M | $191.56M | +2.6% |
| Research & development | $57.43M | $51.06M | $45.67M | $32.94M | +12.5% |
| Selling, general & admin | $43.43M | $47.90M | $32.64M | $23.34M | -9.3% |
| Total operating expense | $194.80M | $179.43M | $155.89M | $121.49M | +8.6% |
| Operating income | $126.21M | $133.41M | $116.10M | $70.07M | -5.4% |
| Net interest income | -$719.72K | -$339.59K | $4.24M | $236.00K | -111.9% |
| Pre-tax income | $104.82M | $113.42M | $106.91M | $68.07M | -7.6% |
| Tax provision | $10.99M | $15.29M | $9.88M | $6.34M | -28.2% |
| Net income | $94.51M | $99.18M | $97.37M | $62.82M | -4.7% |
| Net income to common | $94.51M | $99.18M | $97.37M | $62.82M | -4.7% |
| Basic EPS | 0.63 | 0.65 | 0.64 | 0.51 | -4.2% |
| Diluted EPS | 0.63 | 0.65 | 0.64 | 0.51 | -4.2% |
| EBIT | $107.53M | $117.01M | $107.27M | $70.32M | -8.1% |
| EBITDA | $217.95M | $214.13M | $192.98M | $120.03M | +1.8% |
| Basic shares | 151.07M | 151.92M | 152.84M | 122.46M | -0.6% |
| Diluted shares | 151.07M | 151.92M | 152.84M | 122.46M | -0.6% |
| Line item | 2025 | 2024 | 2023 | 2022 | YoY |
|---|---|---|---|---|---|
| Cash & equivalents | $248.05M | $264.73M | $236.88M | $454.44M | -6.3% |
| Cash & short-term investments | $248.05M | $264.73M | $236.88M | $454.44M | -6.3% |
| Accounts receivable | $217.91M | $180.34M | $211.91M | $159.63M | +20.8% |
| Inventory | $294.62M | $299.16M | $272.26M | $191.27M | -1.5% |
| Total current assets | $856.98M | $816.11M | $789.93M | $871.65M | +5.0% |
| Property, plant & equipment | $936.87M | $929.63M | $790.20M | $675.17M | +0.8% |
| Goodwill & intangibles | $462.18M | $465.53M | $467.25M | $470.60M | -0.7% |
| Total assets | $2.32B | $2.27B | $2.13B | $2.06B | +2.3% |
| Total current liabilities | $275.02M | $235.77M | $146.43M | $129.81M | +16.6% |
| Current debt | $79.63M | $40.47M | $12.91M | $21.44M | +96.7% |
| Long-term debt | — | $9.89M | — | — | — |
| Total debt | $112.85M | $122.62M | $19.41M | $26.43M | -8.0% |
| Total liabilities | $336.09M | $317.04M | $217.15M | $181.13M | +6.0% |
| Retained earnings | $379.14M | $339.35M | $298.58M | $239.39M | +11.7% |
| Shareholder equity | $1.99B | $1.95B | $1.91B | $1.88B | +1.8% |
| Working capital | $581.96M | $580.34M | $643.50M | $741.85M | +0.3% |
| Net tangible assets | $1.52B | $1.48B | $1.45B | $1.41B | +2.6% |
| Shares issued | 150.95M | 152.00M | 153.41M | 153.41M | -0.7% |
| Line item | 2025 | 2024 | 2023 | 2022 | YoY |
|---|---|---|---|---|---|
| Net income | $93.84M | $98.13M | $97.03M | $61.74M | -4.4% |
| Depreciation & amortisation | $110.42M | $97.13M | $85.71M | $49.71M | +13.7% |
| Change in working capital | -$51.43M | $4.79M | -$102.68M | -$52.19M | -1,173.2% |
| Operating cash flow | $179.00M | $224.01M | $94.85M | $61.00M | -20.1% |
| Capital expenditure | -$132.73M | -$229.41M | -$229.40M | -$228.20M | +42.1% |
| Investing cash flow | -$100.93M | -$274.94M | -$239.01M | -$309.81M | +63.3% |
| Dividends paid | -$54.15M | -$56.61M | -$33.14M | -$17.47M | +4.3% |
| Financing cash flow | -$75.92M | $35.97M | -$70.59M | $467.83M | -311.0% |
| Free cash flow | $46.27M | -$5.39M | -$134.54M | -$167.20M | +958.2% |
| End cash position | $222.76M | $221.16M | $235.97M | $449.54M | +0.7% |
| Line item | 2026-03-31 | 2025-12-31 | 2025-06-30 | 2025-03-31 | 2024-12-31 | YoY |
|---|---|---|---|---|---|---|
| Total revenue | $197.56M | $214.42M | $180.57M | $154.48M | $184.00M | -7.9% |
| Operating revenue | $197.56M | $214.42M | $180.57M | $154.48M | $184.00M | -7.9% |
| Cost of revenue | $106.02M | $125.49M | $100.65M | $87.14M | $96.66M | -15.5% |
| Gross profit | $91.54M | $88.93M | $79.92M | $67.34M | $87.34M | +2.9% |
| Research & development | $14.72M | $15.51M | $13.96M | $12.90M | $14.85M | -5.1% |
| Selling, general & admin | $39.44M | -$61.44M | -$8.65M | $32.78M | -$51.45M | +164.2% |
| Total operating expense | $51.30M | $57.54M | $47.59M | $41.27M | $56.22M | -10.8% |
| Operating income | $40.24M | $31.40M | $32.34M | $26.07M | $31.12M | +28.2% |
| Net interest income | -$2.12M | -$679.91K | -$1.24M | $725.60K | -$10.71K | -212.2% |
| Pre-tax income | $32.08M | $24.96M | $25.28M | $23.44M | $22.37M | +28.5% |
| Tax provision | $3.71M | $1.97M | $3.01M | $2.60M | -$43.29K | +88.7% |
| Net income | $28.35M | $23.11M | $22.53M | $21.10M | $22.67M | +22.7% |
| Net income to common | $28.35M | $23.11M | $22.53M | $21.10M | $22.67M | +22.7% |
| Basic EPS | 0.19 | — | — | 0.14 | — | — |
| Diluted EPS | 0.19 | — | — | 0.14 | — | — |
| EBIT | $32.53M | $25.82M | $26.10M | $24.17M | $23.45M | +26.0% |
| EBITDA | $32.53M | $25.82M | $26.10M | $24.17M | $23.45M | +26.0% |
| Basic shares | 150.95M | — | — | 151.23M | — | — |
| Diluted shares | 150.95M | — | — | 151.23M | — | — |
| Line item | 2026-03-31 | 2025-12-31 | 2025-06-30 | 2025-03-31 | 2024-12-31 | YoY |
|---|---|---|---|---|---|---|
| Cash & equivalents | $239.07M | $248.05M | $180.86M | $189.98M | $264.73M | -3.6% |
| Cash & short-term investments | $239.07M | $248.05M | $180.86M | $189.98M | $264.73M | -3.6% |
| Accounts receivable | $194.06M | $217.91M | $192.17M | $172.87M | $180.34M | -10.9% |
| Inventory | $324.46M | $294.62M | $306.73M | $305.96M | $299.16M | +10.1% |
| Total current assets | $870.80M | $856.98M | $760.22M | $765.21M | $816.11M | +1.6% |
| Property, plant & equipment | $940.39M | $936.87M | $938.41M | $921.16M | $929.63M | +0.4% |
| Goodwill & intangibles | $461.39M | $462.18M | $463.74M | $464.43M | $465.53M | -0.2% |
| Total assets | $2.34B | $2.32B | $2.23B | $2.22B | $2.27B | +0.9% |
| Total current liabilities | $262.49M | $275.02M | $190.59M | $160.96M | $235.77M | -4.6% |
| Current debt | $79.53M | $79.63M | $60.02M | $10.01M | $40.47M | -0.1% |
| Long-term debt | — | — | $20.00M | $20.00M | $9.89M | — |
| Total debt | $122.90M | $112.85M | $93.96M | $61.19M | $122.62M | +8.9% |
| Total liabilities | $320.77M | $336.09M | $274.89M | $254.54M | $317.04M | -4.6% |
| Retained earnings | $408.15M | $379.14M | $349.73M | $360.44M | $339.35M | +7.7% |
| Shareholder equity | $2.02B | $1.99B | $1.95B | $1.97B | $1.95B | +1.8% |
| Working capital | $608.31M | $581.96M | $569.63M | $604.25M | $580.34M | +4.5% |
| Net tangible assets | $1.56B | $1.52B | $1.49B | $1.50B | $1.48B | +2.4% |
| Shares issued | 150.95M | 150.95M | 152.00M | 152.00M | 152.00M | 0.0% |
| Line item | 2026-03-31 | 2025-12-31 | 2025-06-30 | 2025-03-31 | 2024-12-31 | YoY |
|---|---|---|---|---|---|---|
| Capital expenditure | -$53.92M | -$32.21M | -$36.15M | -$35.64M | -$59.00M | -67.4% |
| Investing cash flow | -$53.63M | -$23.02M | -$36.54M | -$12.64M | -$102.06M | -133.0% |
| Dividends paid | -$452.11K | -$724.61K | -$34.10M | -$754.40K | -$1.08M | +37.6% |
| Financing cash flow | $9.52M | $18.33M | -$9.30M | -$65.66M | -$16.19M | -48.0% |
| Free cash flow | -$17.52M | $28.56M | -$873.00K | -$9.42M | $61.90M | -161.3% |
| End cash position | $213.78M | $222.76M | $159.08M | $169.41M | $221.16M | -4.0% |
Options analytics
Put / call volume
—
—
Put / call open interest
—
Positioning, not flow
Max pain
—
—
ATM implied vol
—
Nearest strike to spot
Skew (10% OTM)
—
—
Call volume
0
Contracts, this expiry
Put volume
0
Contracts, this expiry
Heaviest call OI
—
—
Heaviest put OI
—
—
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
Forward consensus
| Period | EPS | Analysts | Revenue | Growth |
|---|---|---|---|---|
| Current quarter | — | — | $0 | — |
| Next quarter | — | — | $0 | — |
| Current year | — | — | $0 | — |
| Next year | — | — | $0 | — |
Analyst targets & ownership
Mean target$22.00
High target$22.00
Low target$22.00
Implied upside-75.17%
Analyst count1
ConsensusNONE
Strong buy / Buy0 / 1
Hold0
Sell / Strong sell0 / 0
Held by insiders48.83%
Held by institutions3.87%
Institutions holding42
Price targets, consensus spread, insider and institutional ownership.
Moving averages & technicals
SMA 10
90.82
-2.44% from price
SMA 20
82.79
+6.09% from price
SMA 50
104.37
-15.85% from price
SMA 100
108.54
-18.37% from price
SMA 200
93.65
-6.21% from price
EMA 12
88.98
-0.43% from price
EMA 26
91.11
-2.75% from price
EMA 50
97.52
-9.14% from price
RSI (14)
46.8
Neutral
MACD (12,26,9)
-2.13
Hist 2.10
ATR (14)
6.79
7.74% of price
Realised vol 30D
112.9%
Annualised
Bollinger upper
103.56
20, 2σ
Bollinger lower
62.01
20, 2σ
50 / 200 cross
Golden
104.37 vs 93.65
Trend bias
Below 200
-6.21%
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
0.49
Less volatile than market
Correlation to SPY
0.06
Largely independent
Realised vol 30D
112.9%
Annualised
Market vol 1Y
12.9%
SPY, annualised
Max drawdown 1Y
-60.7%
Peak to trough
Max drawdown 5Y
-68.3%
Peak to trough
ATR 14
6.79
7.74% of price
Beta (reported)
1.41
5Y monthly, from filing
Dividends & splits
Forward rate$0.25 / yr
Forward yield0.27%
5-year avg yield1.18%
Payout ratio50.45%
Ex-dividend dateJun 1, 2026
Next pay date—
Last split1.4:1
Split dateMay 26, 2023
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PRIVATE STRATEGY · BY QUALIFICATION
The same data. A different seat.
The research you are reading is the input layer for a discretionary options program we run for a small number of qualified investors. Minimum $1,000,000.