GFI · Gold Fields Ltd

Track GFI — free

$47.72 +2.27 (+4.99%)

Market Cap

$36.02B

894.42M

Options Chain

Underlying $47.72 · today Options Calculator

Positioning

Aug 21, 2026 · expires today · 20 contracts · mixed snapshot sessions · Jul 23, 2026–Aug 21, 2026; 4 unknown

Put / call OI

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dated and unknown snapshot sessions

Open interest

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dated and unknown snapshot sessions

Volume

—

dated and unknown snapshot sessions

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 0d Sep 18 28d Oct 16 56d Jan 15 147d Mar 19 210d Apr 16 238d Jan 21 518d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	1933.9%	0.983	—		$0.10	—	—	1	1
Call · $20 In the money Snapshot session Unknown Last — Breakeven — Implied vol 1933.9% Delta 0.983 ≈98% ITM Gamma 0.002 Theta -2.229 Vega 0 Open interest 0 Model this call Put · $20 Snapshot session Jul 24, 2026 Last $0.10 Breakeven $19.90 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this put
0	—	1698.1%	0.98	—		$0.10	0	0%	2	2
Call · $22.5 In the money Snapshot session Unknown Last — Breakeven — Implied vol 1698.1% Delta 0.98 ≈98% ITM Gamma 0.002 Theta -2.194 Vega 0.001 Open interest 0 Model this call Put · $22.5 Snapshot session Jul 23, 2026 Last $0.10 Breakeven $22.40 Implied vol 0% Delta 0 ≈0% ITM Gamma 0 Theta 0 Vega 0 Open interest 2 Model this put
1	1	1478%	0.978	$7.50		$0.03	-0.021	1459.9%	11	121
Call · $25 In the money Snapshot session Jul 23, 2026 Last $7.50 Breakeven $32.50 Implied vol 1478% Delta 0.978 ≈98% ITM Gamma 0.003 Theta -2.127 Vega 0.001 Open interest 1 Model this call Put · $25 Snapshot session Aug 7, 2026 Last $0.03 Breakeven $24.97 Implied vol 1459.9% Delta -0.021 ≈2% ITM Gamma 0.003 Theta -1.997 Vega 0.001 Open interest 121 Model this put
111	201	1098.7%	0.97	$15.30		$0.05	-0.021	1012.4%	6	3k
Call · $30 In the money Snapshot session Aug 20, 2026 Last $15.30 Breakeven $45.30 Implied vol 1098.7% Delta 0.97 ≈97% ITM Gamma 0.005 Theta -1.986 Vega 0.001 Open interest 111 Model this call Put · $30 Snapshot session Aug 20, 2026 Last $0.05 Breakeven $29.95 Implied vol 1012.4% Delta -0.021 ≈2% ITM Gamma 0.004 Theta -1.37 Vega 0 Open interest 3k Model this put
8.8k	3.2k	539.7%	0.993	$12.86		$0.05	-0.029	715.3%	10	2.3k
Call · $35 In the money Snapshot session Aug 21, 2026 Last $12.86 Breakeven $47.86 Implied vol 539.7% Delta 0.993 ≈99% ITM Gamma 0.003 Theta -0.275 Vega 0 Open interest 8.8k Model this call Put · $35 Snapshot session Aug 19, 2026 Last $0.05 Breakeven $34.95 Implied vol 715.3% Delta -0.029 ≈3% ITM Gamma 0.008 Theta -1.27 Vega 0.001 Open interest 2.3k Model this put
4.2k	2k	458.1%	0.951	$7.91		$0.19	-0.126	693.3%	2	359
Call · $40 In the money Snapshot session Aug 21, 2026 Last $7.91 Breakeven $47.91 Implied vol 458.1% Delta 0.951 ≈95% ITM Gamma 0.019 Theta -1.248 Vega 0.001 Open interest 4.2k Model this call Put · $40 Snapshot session Aug 21, 2026 Last $0.19 Breakeven $39.81 Implied vol 693.3% Delta -0.126 ≈13% ITM Gamma 0.026 Theta -3.903 Vega 0.003 Open interest 359 Model this put
395	64	—	—	$2.65		$0.12	-0.228	354.9%	3	7
Call · $45 In the money Snapshot session Aug 21, 2026 Last $2.65 Breakeven $47.65 Implied vol — Delta — Gamma — Theta — Vega — Open interest 395 Model this call Put · $45 Snapshot session Aug 21, 2026 Last $0.12 Breakeven $44.88 Implied vol 354.9% Delta -0.228 ≈23% ITM Gamma 0.074 Theta -2.932 Vega 0.004 Open interest 7 Model this put
Underlying $47.72
41	4	182.4%	0.158	$0.05		$9.11	-0.878	157.8%	10	5
Call · $50 Snapshot session Aug 21, 2026 Last $0.05 Breakeven $50.05 Implied vol 182.4% Delta 0.158 ≈16% ITM Gamma 0.115 Theta -1.192 Vega 0.003 Open interest 41 Model this call Put · $50 In the money Snapshot session Aug 10, 2026 Last $9.11 Breakeven $40.89 Implied vol 157.8% Delta -0.878 ≈88% ITM Gamma 0.111 Theta -0.867 Vega 0.002 Open interest 5 Model this put
2	2	497.7%	0.134	$0.16		—	—	—	—	0
Call · $55 Snapshot session Aug 21, 2026 Last $0.16 Breakeven $55.16 Implied vol 497.7% Delta 0.134 ≈13% ITM Gamma 0.038 Theta -2.923 Vega 0.002 Open interest 2 Model this call Put · $55 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
22	7	601.2%	0.068	$0.05		—	—	—	—	0
Call · $60 Snapshot session Aug 10, 2026 Last $0.05 Breakeven $60.05 Implied vol 601.2% Delta 0.068 ≈7% ITM Gamma 0.019 Theta -2.127 Vega 0.001 Open interest 22 Model this call Put · $60 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put

About this data

Each contract's last price, volume, greeks, implied volatility and open interest belongs to the snapshot session shown in its details; unknown means the provider omitted the timestamp. This chain has mixed snapshot sessions · Jul 23, 2026–Aug 21, 2026; 4 unknown. Cross-contract positioning totals are shown only when every returned row has the same known session. Bid and ask are not included on this plan.

In-the-money strikes are tinted, deepening toward the money, and the bar beside each open-interest figure scales to the heaviest strike shown.

Key facts CIK 1172724 CUSIP 38059T106 13F (30d) 361 filings 330 filers Visit website Investor relations