What is Put-Call Ratio (PCR) and how do I interpret it?

PCR is the ratio of total Put Open Interest to Call Open Interest. High PCR (>1.2) indicates bullish sentiment as more puts provide support. Low PCR (<0.8) indicates bearish sentiment as more calls provide resistance. Neutral PCR (0.8-1.2) shows balanced market sentiment.

What is COI PCR and how is it different from regular PCR?

COI PCR (Change in OI PCR) measures the ratio of intraday Put OI change to Call OI change. Unlike regular PCR which uses total accumulated OI, COI PCR uses only today's changes, making it more responsive and valuable for intraday traders.

What is COI Strength and how do I use it?

COI Strength = (PE COI - CE COI) / (|PE COI| + |CE COI|). This normalized indicator measures directional bias on a scale from -1 to +1. Values > 0.3 indicate bullish sentiment, < -0.3 indicate bearish sentiment, and -0.3 to 0.3 indicate neutral activity.

How often does PCR data update?

PCR data updates based on the selected interval. 1 Minute interval provides real-time intraday tracking with updates every minute during market hours. 1 Day interval shows end-of-day PCR values for historical analysis.

What do negative PCR values mean?

Negative PCR occurs when Call OI Change is negative while Put OI is also negative, or vice versa. Common scenarios include: PE > 0 and CE 0 (strong bearish), or both negative (neutral, low conviction). Use COI Strength for clearer signals in these cases.

How do I use PCR with price action?

Combine PCR with price for better signals. Use divergence trading when price and PCR move opposite. Look for confirmation when price and PCR align. Watch for extreme COI Strength values at support/resistance for reversal signals. Monitor sudden COI Strength shifts as they often precede intraday trend changes.

NATIONALUM

Q: What is COI PCR and how is it different from regular PCR?

COI PCR (Change in OI PCR) measures the ratio of intraday Put OI change to Call OI change. Unlike regular PCR which uses total accumulated OI, COI PCR uses only today's changes, making it more responsive and valuable for intraday traders.

Q: What is COI Strength and how do I use it?

COI Strength = (PE COI - CE COI) / (|PE COI| + |CE COI|). This normalized indicator measures directional bias on a scale from -1 to +1. Values > 0.3 indicate bullish sentiment, < -0.3 indicate bearish sentiment, and -0.3 to 0.3 indicate neutral activity.

Q: How often does PCR data update?

PCR data updates based on the selected interval. 1 Minute interval provides real-time intraday tracking with updates every minute during market hours. 1 Day interval shows end-of-day PCR values for historical analysis.

Q: What do negative PCR values mean?

Negative PCR occurs when Call OI Change is negative while Put OI is also negative, or vice versa. Common scenarios include: PE > 0 and CE 0 (strong bearish), or both negative (neutral, low conviction). Use COI Strength for clearer signals in these cases.

National Aluminium Co Ltd

263.25 +0.25 (0.10%)

L: 262.75 H: 268.25

Put-Call Ratio - NATIONALUM

11 Dec 2025 02:11 PM IST

Live

Expiry

Put OI

6,031

Call OI

8,201

PCR

0.74

Put OI Chg

53

Call OI Chg

230

COI PCR

0.23

COI Strength

-0.63

Interval

On 9:30 NATIONALUM was trading at 265.7 with pcr value 0.75

On 9:45 NATIONALUM was trading at 266.35 with pcr value 0.75

On 10:00 NATIONALUM was trading at 266.3 with pcr value 0.75

On 10:15 NATIONALUM was trading at 266.1 with pcr value 0.75

On 10:30 NATIONALUM was trading at 266.7 with pcr value 0.75

On 10:45 NATIONALUM was trading at 264.95 with pcr value 0.75

On 11:00 NATIONALUM was trading at 264.25 with pcr value 0.75

On 11:15 NATIONALUM was trading at 263.95 with pcr value 0.74

On 11:30 NATIONALUM was trading at 263.8 with pcr value 0.74

On 11:45 NATIONALUM was trading at 263.2 with pcr value 0.74

On 12:00 NATIONALUM was trading at 263.1 with pcr value 0.74

On 12:15 NATIONALUM was trading at 263.65 with pcr value 0.73

On 12:30 NATIONALUM was trading at 264 with pcr value 0.74

On 12:45 NATIONALUM was trading at 263.5 with pcr value 0.74

On 13:00 NATIONALUM was trading at 264.05 with pcr value 0.74

On 13:15 NATIONALUM was trading at 263.35 with pcr value 0.74

On 13:30 NATIONALUM was trading at 263.6 with pcr value 0.74

On 13:45 NATIONALUM was trading at 263.9 with pcr value 0.74

On 14:00 NATIONALUM was trading at 263.6 with pcr value 0.74

On 14:12 NATIONALUM was trading at 263.35 with pcr value 0.74

Put-Call-Ratio Table

PCR Table Expiry

Note:- click on symbol to see more detailed view

	PCR OI			COI PCR
Symbol	Put	Call	Ratio	Put	Call	Ratio
360ONE	1,654	3,064	0.54	-35	-29	1.21
ABB	5,053	6,723	0.75	95	457	0.21
ABCAPITAL	4,948	7,802	0.63	327	409	0.80
ADANIENSOL	3,388	5,412	0.63	33	-175	-0.19
ADANIENT	27,710	42,680	0.65	1,099	-2,602	-0.42
ADANIGREEN	11,344	20,759	0.55	1,004	-922	-1.09
ADANIPORTS	9,872	18,228	0.54	160	-1,002	-0.16
ALKEM	1,146	1,793	0.64	72	41	1.76
AMBER	6,989	11,468	0.61	91	-391	-0.23
AMBUJACEM	9,104	12,073	0.75	-243	156	-1.56
ANGELONE	8,109	17,579	0.46	-310	-1,692	0.18
APLAPOLLO	2,424	2,701	0.90	424	-87	-4.87
APOLLOHOSP	7,289	15,457	0.47	482	952	0.51
ASHOKLEY	9,919	12,502	0.79	276	-158	-1.75
ASIANPAINT	17,324	30,152	0.57	398	1,809	0.22
ASTRAL	4,276	7,893	0.54	205	327	0.63
AUBANK	6,455	7,863	0.82	-647	92	-7.03
AUROPHARMA	4,441	10,362	0.43	48	-28	-1.71
AXISBANK	14,118	29,634	0.48	-71	-26	2.73
BAJAJ-AUTO	14,677	24,984	0.59	-96	-1,076	0.09
BAJAJFINSV	13,387	19,419	0.69	-106	-172	0.62
BAJFINANCE	22,448	37,197	0.60	792	2,233	0.35
BANDHANBNK	8,419	12,384	0.68	-42	-78	0.54
BANKBARODA	12,467	14,941	0.83	-87	444	-0.20
BANKINDIA	3,215	4,596	0.70	75	-73	-1.03
BDL	7,576	16,955	0.45	-281	-458	0.61
BEL	26,242	56,916	0.46	174	-177	-0.98
BHARATFORG	4,028	6,290	0.64	136	-95	-1.43
BHARTIARTL	18,478	40,265	0.46	577	1,968	0.29
BHEL	9,518	18,588	0.51	81	-414	-0.20
BIOCON	6,625	13,371	0.50	139	-2	-69.50
BLUESTARCO	867	1,303	0.67	74	-85	-0.87
BOSCHLTD	1,498	2,541	0.59	17	-322	-0.05
BPCL	5,035	7,555	0.67	267	350	0.76
BRITANNIA	4,614	7,299	0.63	-30	-154	0.19
BSE	17,707	30,271	0.58	546	-2,081	-0.26
CAMS	4,417	7,914	0.56	-15	-156	0.10
CANBK	12,152	15,569	0.78	191	-429	-0.45
CDSL	9,976	20,422	0.49	-110	-1,462	0.08
CGPOWER	4,778	8,780	0.54	-90	-34	2.65
CHOLAFIN	3,431	5,314	0.65	55	-53	-1.04
CIPLA	10,770	15,238	0.71	-33	-312	0.11
COALINDIA	12,618	11,505	1.10	134	-635	-0.21
COFORGE	8,619	21,888	0.39	-172	878	-0.20
COLPAL	6,612	8,907	0.74	-119	71	-1.68
CONCOR	7,104	9,477	0.75	-114	106	-1.08
CROMPTON	6,446	11,151	0.58	112	85	1.32
CUMMINSIND	3,607	4,357	0.83	191	-41	-4.66
CYIENT	1,871	2,738	0.68	-2	-30	0.07
DABUR	4,711	8,890	0.53	41	347	0.12
DALBHARAT	1,788	2,748	0.65	30	-196	-0.15
DELHIVERY	3,944	5,781	0.68	15	38	0.39
DIVISLAB	6,755	8,924	0.76	437	-272	-1.61
DIXON	34,860	72,592	0.48	5,308	2,336	2.27
DLF	16,411	24,088	0.68	71	-647	-0.11
DMART	7,331	12,998	0.56	395	378	1.04
DRREDDY	5,476	10,468	0.52	596	-223	-2.67
EICHERMOT	11,267	14,216	0.79	679	1,243	0.55
ETERNAL	17,921	31,056	0.58	183	-1,210	-0.15
EXIDEIND	3,896	5,054	0.77	-37	-71	0.52
FEDERALBNK	7,811	8,221	0.95	678	-73	-9.29
FORTIS	3,494	9,159	0.38	58	87	0.67
GAIL	12,865	19,474	0.66	-126	-187	0.67
GLENMARK	8,338	11,580	0.72	-376	188	-2.00
GMRAIRPORT	9,972	18,758	0.53	172	556	0.31
GODREJCP	2,846	4,000	0.71	-42	-180	0.23
GODREJPROP	6,979	11,970	0.58	-116	-185	0.63
GRASIM	8,800	9,025	0.98	311	-656	-0.47
HAL	27,843	52,629	0.53	-300	-1,349	0.22
HAVELLS	3,861	5,108	0.76	-23	104	-0.22
HCLTECH	11,774	19,224	0.61	-51	584	-0.09
HDFCAMC	4,274	5,173	0.83	-22	-311	0.07
HDFCBANK	41,062	60,824	0.68	-1,147	-7,060	0.16
HDFCLIFE	6,990	15,116	0.46	202	680	0.30
HEROMOTOCO	11,976	16,613	0.72	159	-655	-0.24
HFCL	4,446	10,098	0.44	6	-456	-0.01
HINDALCO	15,237	20,314	0.75	100	108	0.93
HINDPETRO	4,162	6,406	0.65	112	92	1.22
HINDUNILVR	7,117	15,935	0.45	65	-25	-2.60
HINDZINC	12,024	18,727	0.64	1,404	1,528	0.92
HUDCO	6,261	13,106	0.48	-182	-204	0.89
ICICIBANK	30,804	48,075	0.64	426	1,955	0.22
ICICIGI	3,216	5,002	0.64	71	-18	-3.94
ICICIPRULI	2,342	4,379	0.53	-229	60	-3.82
IDEA	15,203	27,452	0.55	328	-112	-2.93
IDFCFIRSTB	8,727	14,006	0.62	63	387	0.16
IEX	8,575	11,944	0.72	93	-87	-1.07
IIFL	2,493	3,849	0.65	-7	97	-0.07
INDHOTEL	5,695	8,542	0.67	135	-68	-1.96
INDIANB	4,680	10,809	0.43	-64	43	-1.49
INDIGO	57,261	1,18,839	0.48	2,779	6,992	0.40
INDUSINDBK	12,634	18,153	0.70	163	-254	-0.64
INDUSTOWER	8,289	12,927	0.64	-92	-356	0.26
INFY	37,101	58,733	0.63	-942	-397	2.37
INOXWIND	7,134	14,338	0.50	125	-613	-0.20
IOC	6,181	11,422	0.54	160	737	0.22
IRCTC	7,171	11,198	0.64	74	-129	-0.57
IREDA	5,064	10,633	0.48	-99	-203	0.49
IRFC	4,492	8,854	0.51	81	-7	-11.57
ITC	24,679	32,809	0.75	237	373	0.64
JINDALSTEL	5,451	7,976	0.68	25	29	0.86
JIOFIN	18,734	25,635	0.73	-139	-1,445	0.10
JSWENERGY	10,255	18,557	0.55	-280	-453	0.62
JSWSTEEL	14,467	27,881	0.52	-4	-266	0.02
JUBLFOOD	3,878	5,746	0.67	-128	-337	0.38
KALYANKJIL	4,596	8,837	0.52	287	-88	-3.26
KAYNES	30,849	81,843	0.38	1,512	3,459	0.44
KEI	1,631	3,068	0.53	30	-182	-0.16
KFINTECH	4,459	6,096	0.73	339	-67	-5.06
KOTAKBANK	21,644	22,269	0.97	6,797	3,603	1.89
KPITTECH	3,171	4,993	0.64	183	-547	-0.33
LAURUSLABS	5,078	8,787	0.58	218	-233	-0.94
LICHSGFIN	7,481	9,182	0.81	-32	49	-0.65
LICI	6,288	10,245	0.61	63	-15	-4.20
LODHA	4,621	10,280	0.45	-18	46	-0.39
LT	17,772	31,235	0.57	47	613	0.08
LTF	5,191	7,912	0.66	29	-16	-1.81
LTIM	4,678	6,069	0.77	-194	49	-3.96
LUPIN	4,954	6,454	0.77	229	-322	-0.71
M&M	16,400	27,757	0.59	-13	289	-0.04
MANAPPURAM	3,459	5,573	0.62	32	-56	-0.57
MANKIND	2,199	4,215	0.52	-13	116	-0.11
MARICO	2,679	3,935	0.68	-122	-237	0.51
MARUTI	24,186	29,805	0.81	3,906	46	84.91
MAXHEALTH	5,319	10,034	0.53	-129	-47	2.74
MAZDOCK	9,759	19,605	0.50	-191	-193	0.99
MCX	14,788	23,309	0.63	-190	711	-0.27
MFSL	2,476	4,192	0.59	26	-173	-0.15
MOTHERSON	6,435	9,908	0.65	499	501	1.00
MPHASIS	3,624	4,617	0.78	13	-30	-0.43
MUTHOOTFIN	4,804	9,932	0.48	174	235	0.74
NATIONALUM	6,031	8,201	0.74	53	230	0.23
NAUKRI	5,756	8,219	0.70	194	191	1.02
NBCC	3,203	6,694	0.48	65	170	0.38
NCC	3,578	7,118	0.50	104	11	9.45
NESTLEIND	4,481	15,231	0.29	-29	-129	0.22
NHPC	3,182	7,167	0.44	13	-211	-0.06
NMDC	9,973	12,711	0.78	-138	-552	0.25
NTPC	14,244	22,639	0.63	86	-390	-0.22
NUVAMA	2,276	4,281	0.53	116	84	1.38
NYKAA	2,719	6,601	0.41	49	207	0.24
OBEROIRLTY	3,958	5,666	0.70	-19	-362	0.05
OFSS	10,236	8,376	1.22	4,457	-365	-12.21
OIL	2,495	4,034	0.62	-12	-243	0.05
ONGC	8,366	19,107	0.44	-40	-117	0.34
PAGEIND	3,371	6,797	0.50	-92	-137	0.67
PATANJALI	3,636	7,910	0.46	183	135	1.36
PAYTM	7,942	12,327	0.64	-178	-294	0.61
PERSISTENT	6,306	9,910	0.64	765	279	2.74
PETRONET	8,503	8,027	1.06	7	-37	-0.19
PFC	20,226	32,353	0.63	317	1,135	0.28
PGEL	8,255	12,844	0.64	-183	-14	13.07
PHOENIXLTD	1,436	2,823	0.51	-3	16	-0.19
PIDILITIND	1,926	2,544	0.76	-24	-44	0.55
PIIND	2,565	3,760	0.68	-55	-103	0.53
PNB	11,572	21,910	0.53	-69	317	-0.22
PNBHOUSING	4,048	4,991	0.81	38	-162	-0.23
POLICYBZR	4,687	5,681	0.83	21	-90	-0.23
POLYCAB	4,111	5,892	0.70	120	-96	-1.25
POWERGRID	10,612	15,686	0.68	182	369	0.49
POWERINDIA	4,393	12,098	0.36	-150	493	-0.30
PPLPHARMA	2,526	6,063	0.42	-4	31	-0.13
PRESTIGE	2,956	3,630	0.81	125	-53	-2.36
RBLBANK	4,489	6,850	0.66	277	63	4.40
RECLTD	21,132	31,194	0.68	-55	317	-0.17
RELIANCE	51,577	96,253	0.54	1,073	2,597	0.41
RVNL	6,572	12,332	0.53	-8	-63	0.13
SAIL	5,751	9,924	0.58	81	9	9.00
SAMMAANCAP	5,937	9,000	0.66	-2	-11	0.18
SBICARD	4,580	6,987	0.66	-24	-293	0.08
SBILIFE	4,914	9,314	0.53	81	582	0.14
SBIN	39,670	65,260	0.61	-1,060	-1,028	1.03
SHREECEM	1,519	2,717	0.56	254	-233	-1.09
SHRIRAMFIN	12,116	17,757	0.68	-148	-257	0.58
SIEMENS	5,765	12,618	0.46	312	528	0.59
SOLARINDS	3,534	8,065	0.44	-18	202	-0.09
SONACOMS	2,672	5,508	0.49	312	-188	-1.66
SRF	6,698	10,131	0.66	748	-88	-8.50
SUNPHARMA	6,342	15,203	0.42	-448	-1,198	0.37
SUPREMEIND	3,780	7,012	0.54	485	719	0.67
SUZLON	9,825	23,124	0.42	165	118	1.40
SYNGENE	1,626	2,501	0.65	-14	-51	0.27
TATACONSUM	4,558	8,491	0.54	-28	-185	0.15
TATAELXSI	5,210	15,071	0.35	-31	-231	0.13
TATAMOTORS	0	0	0.00	6	-117	-0.05
TATAPOWER	19,662	25,786	0.76	-241	-30	8.03
TATASTEEL	15,834	32,046	0.49	386	-1,539	-0.25
TATATECH	4,695	7,471	0.63	30	-222	-0.14
TCS	37,878	49,116	0.77	1,581	2,215	0.71
TECHM	7,239	9,249	0.78	-193	-200	0.96
TIINDIA	4,634	7,386	0.63	87	-153	-0.57
TITAGARH	2,524	5,497	0.46	-4	-114	0.04
TITAN	12,175	20,691	0.59	640	570	1.12
TMPV	39,814	86,259	0.46	418	-2,345	-0.18
TORNTPHARM	1,183	2,355	0.50	-24	140	-0.17
TORNTPOWER	2,091	2,833	0.74	215	-136	-1.58
TRENT	26,626	48,806	0.55	1,323	3,706	0.36
TVSMOTOR	9,356	9,795	0.96	-24	-152	0.16
ULTRACEMCO	10,634	18,475	0.58	270	-347	-0.78
UNIONBANK	5,693	9,254	0.62	74	-33	-2.24
UNITDSPR	6,396	8,447	0.76	56	65	0.86
UNOMINDA	2,733	4,960	0.55	-102	-43	2.37
UPL	4,076	5,547	0.73	106	-135	-0.79
VBL	8,967	22,285	0.40	-40	174	-0.23
VEDL	22,192	32,788	0.68	1,191	-453	-2.63
VOLTAS	6,815	7,772	0.88	-117	-180	0.65
WIPRO	11,088	13,777	0.80	138	-321	-0.43
YESBANK	6,271	12,227	0.51	70	-11	-6.36
ZYDUSLIFE	3,294	4,363	0.75	14	119	0.12

Understanding PCR & COI Metrics

PCR (Put-Call Ratio)

PCR = Put OI / Call OI

> 1.2

Bullish

More puts than calls, potential support

0.8 - 1.2

Neutral

Balanced market sentiment

< 0.8

Bearish

More calls than puts, potential resistance

COI Strength

COI Strength = (PE COI - CE COI) / (|PE| + |CE|)

> 0.3

Bullish

Strong put buildup dominance

-0.3 to 0.3

Neutral

Balanced intraday activity

< -0.3

Bearish

Strong call buildup dominance

Frequently Asked Questions

PCR is the ratio of total Put Open Interest to Call Open Interest. It's a contrarian indicator of market sentiment:

High PCR (>1.2): More traders are holding puts, expecting a decline. However, this often acts as support (bullish) as market makers hedge by buying the underlying.
Low PCR (<0.8): More traders are holding calls, expecting a rise. This often acts as resistance (bearish) as market makers hedge by selling the underlying.
Neutral PCR (0.8-1.2): Balanced sentiment with no strong directional bias.

Remember: PCR is contrarian - extreme readings often signal reversals rather than continuation.

COI PCR (Change in OI PCR) measures the ratio of intraday Put OI change to Call OI change, making it more responsive than total OI PCR.

Key Differences:

Regular PCR: Uses total accumulated Open Interest. Shows overall market positioning but changes slowly.
COI PCR: Uses only today's OI changes. Captures fresh positioning and provides timely intraday signals.

Use Case: COI PCR helps identify intraday sentiment shifts before they reflect in total PCR, making it valuable for day traders and short-term positions.

COI Strength = (PE COI - CE COI) / (|PE COI| + |CE COI|)

This normalized indicator measures the directional bias of intraday Open Interest changes on a scale from -1 to +1:

> 0.3 (Bullish): Put side dominance - fresh put writing or buying suggests bullish positioning.
-0.3 to 0.3 (Neutral): Balanced activity on both sides - no clear directional conviction.
< -0.3 (Bearish): Call side dominance - fresh call writing or buying suggests bearish positioning.

Advantages over PCR:

Normalized scale (-1 to +1) makes comparison across symbols easier
Not affected by extreme ratios when one side is very small
Clearly shows which side has stronger intraday momentum

PCR data updates based on the selected interval:

1 Minute Interval: Updates every minute during market hours, providing real-time intraday tracking.
1 Day Interval: Shows end-of-day PCR values for historical analysis and trend identification.

Note: OI data comes from the exchange and may have a slight delay. Premium users get access to faster refresh rates and more granular intervals.

Negative PCR occurs when Call OI Change is negative (unwinding) while Put OI Change is also negative, or vice versa.

Common Scenarios:

PE > 0, CE < 0: Puts building, Calls unwinding → Strong bullish signal
PE < 0, CE > 0: Puts unwinding, Calls building → Strong bearish signal
Both negative: Both sides unwinding → Low conviction, neutral to ranging market

Tip: When PCR becomes negative or very large, use COI Strength instead - it handles these edge cases better and provides clearer directional signals.

Best Practices for Combining PCR with Price:

Divergence Trading: If price is falling but COI PCR shows put buildup (>1.2), it may signal a bounce. If price is rising but COI PCR shows call buildup (<0.8), it may signal resistance.
Confirmation: Use PCR to confirm price trends. Rising prices with increasing calls or falling prices with increasing puts suggests trend continuation.
Extremes: Very high COI Strength (>0.6 or <-0.6) combined with price at support/resistance can signal strong reversals.
Intraday Pivots: Watch for sudden COI Strength shifts (e.g., from +0.5 to -0.3) as they often precede intraday trend changes.

Remember: PCR is a sentiment indicator, not a timing tool. Always combine with technical analysis, support/resistance levels, and risk management.

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