Number: C-DF-13/2020

Segment: Financial Derivatives

Date: 24 July 2020

Circular Effective Date: 29 July 2020

Replaces: C-DF-12/2020

Subject Margin Calculation Parameters.

In accordance with the provisions of the Article regarding “Margins required by BME CLEARING” of BME CLEARING’s Summary Rule Book, this Circular establishes the Margin Calculation Parameters.

1.- CONSTRUCTION OF VALUATION ARRAYS

Total Percentage Extraordinary Fluctuation Increase and Margin Class Product Margin to be Decrease of Fluctuation analyzed 002 BONO 10 600 b.p. 480 b.p. 10% 021 IBEX 35, MINI IBEX 35 & MICRO IBEX 35 900 points 720 points 45% 0S1 IBEX 35 BANKS 13% 10% 10% 0S2 IBEX 35 ENERGY 12% 10% 10% 023 BBVA 17% 14% 30% 025 14% 11% 44% 027 14% 11% 39% 028 SANTANDER 17% 14% 32% 030 18% 14% 37% 031 TELEFÓNICA 15% 12% 28% 033 13% 10% 29% 035 15% 12% 36% 037 14% 11% 32% 038 INDRA 14% 11% 37% 041 AMADEUS 14% 11% 31% 043 12% 10% 30% 045 ACS 17% 14% 42% 046 23% 18% 31% 047 G 15% 12% 31% 048 17% 14% 36% 050 SACYR VALLEH. 17% 14% 37% 051 FCC 14% 11% 48% 052 ENAGAS 12% 10% 44% 053 REE 12% 10% 34% 054 GAMESA 18% 14% 29% 056 MEDIASET 13% 10% 41% 057 CORP. 12% 10% 46% 058 ATRESMEDIA 13% 10% 32% 066 COLONIAL 16% 13% 30%

1/9

Total Percentage Extraordinary Fluctuation Increase and Margin Class Product Margin to be Decrease of Fluctuation analyzed Volatility 067 BME 15% 12% 43% 068 13% 10% 31% 072 ARCELOR MITTAL 23% 18% 24% 073 TEC. REUNIDAS 18% 14% 41% 074 OBRASCON HUARTE 35% 28% 26% 076 10% 8% 40% 078 IAG 23% 19% 27% 080 CAIXABANK 16% 13% 28% 081 18% 14% 39% 082 DIA 54% 43% 36% 085 18% 14% 40% 087 AENA 16% 13% 39% 088 MERLIN 16% 13% 20% 089 15% 12% 34% 090 MELIA 21% 17% 26% 091 CIE AUTOMOTIVE 18% 14% 27% 092 17% 14% 32% 093 MASMOVIL 20% 16% 14% 094 ALMIRALL 19% 15% 23% 099 IBEX 35 IMPACTO DIV YEAR 1 22% 18% 10% 199 IBEX 35 IMPACTO DIV YEAR 2 25% 20% 10% 299 IBEX 35 IMPACTO DIV YEARS 3-5 25% 20% 10% 399 IBEX 35 IMPACTO DIV YEARS 6-8 25% 20% 10% 150 DIVIDENDS BBVA YEAR 1 2% 2% 10% 250 DIVIDENDS BBVA YEAR 2 32% 25% 10% 350 DIVIDENDS BBVA YEARS 3-5 34% 27% 10% 450 DIVIDENDS BBVA YEARS 6-8 34% 27% 10% 151 DIVIDENDS IBERDROLA YEAR 1 2% 2% 10% 251 DIVIDENDS IBERDROLA YEAR 2 18% 14% 10% 351 DIVIDENDS IBERDROLA YEARS 3-5 18% 14% 10% 451 DIVIDENDS IBERDROLA YEARS 6-8 21% 17% 10% 152 DIVIDENDS SANTANDER YEAR 1 2% 2% 10% 252 DIVIDENDS SANTANDER YEAR 2 32% 25% 10% 352 DIVIDENDS SANTANDER YEARS 3-5 32% 25% 10% 452 DIVIDENDS SANTANDER YEARS 6-8 32% 25% 10% 153 DIVIDENDS REPSOL YEAR 1 3% 2% 10% 253 DIVIDENDS REPSOL YEAR 2 30% 24% 10% 353 DIVIDENDS REPSOL YEARS 3-5 30% 24% 10% 453 DIVIDENDS REPSOL YEARS 6-8 32% 25% 10% 154 DIVIDENDS TELEFÓNICA YEAR 1 15% 12% 10% 254 DIVIDENDS TELEFÓNICA YEAR 2 29% 23% 10% 354 DIVIDENDS TELEFÓNICA YEARS 3-5 30% 24% 10% 454 DIVIDENDS TELEFÓNICA YEARS 6-8 30% 24% 10% 155 DIVIDENDS INDITEX YEAR 1 20% 16% 10% 255 DIVIDENDS INDITEX YEAR 2 30% 24% 10%

Circular C-DF-13/2020 2/9

Total Percentage Extraordinary Fluctuation Increase and Margin Class Product Margin to be Decrease of Fluctuation analyzed Volatility 355 DIVIDENDS INDITEX YEARS 3-5 30% 24% 10% 455 DIVIDENDS INDITEX YEARS 6-8 32% 26% 10% 157 DIVIDENDS NATURGY YEAR 1 10% 8% 10% 257 DIVIDENDS NATURGY YEAR 2 23% 18% 10% 357 DIVIDENDS NATURGY YEARS 3-5 23% 18% 10% 457 DIVIDENDS NATURGY YEARS 6-8 23% 18% 10% 158 DIVIDENDS CAIXABANK YEAR 1 2% 2% 10% 258 DIVIDENDS CAIXABANK YEAR 2 20% 16% 10% 358 DIVIDENDS CAIXABANK YEARS 3-5 35% 28% 10% 458 DIVIDENDS CAIXABANK YEARS 6-8 35% 28% 10% Dividend Futures Intervals are applied to both contract sizes.

• Comments on the above table

For Class 021 the price fluctuation (up and down) is stated in price points. For the other Margin Classes the price fluctuation is stated as a percentage of the closing price of the Underlying asset, equal to the closing price of the respective future on expiration if available; If not, equal to the closing price of the shares on the capitalized on the expiration date, less estimated dividends.

For all Margin Classes the percentage increase and decrease of volatility is multiplied by the volatility.

• Number of columns

Classes 0S1, 0S2, 021 and from 092: 11 Classes 002, and from 099 to 458: 3

• Interest Rate

For each option contract, the interest rate corresponding to the number of days remaining between the valuation date and the option’s expiration date will be used.

• Time to expiration

Number of days between the session date and the option’s expiration date, taking an annual basis of 365 days, if the annualized period is greater than 365 days, and 360 days otherwise.

• Dividends

When valuating American stock options MEFF will use the estimated dividends for each underlying included from Classes 023 to 458.

• Options Pricing Model

Class 021: Black option pricing model.

Circular C-DF-13/2020 3/9

Classes from 023 to 092: For American stock Options the Binomial option pricing model is used, considering a number of time steps equal to 50. For European stock Options included in these groups, the Black & Scholes option pricing model will apply.

2.- APPLICATION OF THE VALUATION ARRAYS TO OPEN POSITIONS

Multiplier

Classes 021 (IBEX 35), 099, 199, 299 and 399 (IBEX 10 35 IMPACTO DIV) and 002 (BONO 10):

Classes 0S1 and 0S2 (Sectorial IBEX 35 Indexes): 5

Class 021 (MINI IBEX 35): 1

Class 021 (MICRO IBEX 35): 0.1

Classes from 023 to 458 (Except Classes 099, 199, 299 Contract Nominal and 399):

3.- TIME SPREAD MARGINS

Variable Time Spread Margin Products

Minimum Margin Class Product Factor spread margin 002 BONO 10 160 b.p. 1.2 021 IBEX 35, MINI IBEX 35 & MICRO IBEX 35 25 points 1.2 0S1 IBEX 35 BANKS 25 points 1.2 0S2 IBEX 35 ENERGY 35 points 1.2 023 BBVA 1.03 1.2 025 ENDESA 0.33 euro 1.2 027 IBERDROLA 1.68 euro 1.2 028 SANTANDER 1.01 euro 1.2 030 REPSOL 0.51 euro 1.2 031 TELEFÓNICA 0.20 euro 1.2 033 ACERINOX 1.08 euro 1.2 035 BANKINTER 1.38 euro 1.2 037 NATURGY 0.99 euro 1.2 038 INDRA 1.24 euro 1.2 041 AMADEUS 0.45 euro 1.2 043 INDITEX 0.20 euro 1.2 045 ACS 0.78 euro 1.2 046 BANCO SABADELL 0.42 euro 1.2 047 G FERROVIAL 0.40 euro 1.2 048 ACCIONA 3.54 euro 1.2 050 SACYR VALLEH. 0.23 euro 1.2

Circular C-DF-13/2020 4/9

Minimum Margin Class Product Factor spread margin 051 FCC 0.62 euro 1.2 052 ENAGAS 0.68 euro 1.2 053 REE 0.63 euro 1.2 054 0.7 euro 1.2 056 MEDIASET 0.83 euro 1.2 057 CORP. MAPFRE 0.86 euro 1.2 058 ATRESMEDIA 0.68 euro 1.2 066 COLONIAL 1.03 euro 1.2 067 BME 0.68 euro 1.2 068 GRIFOLS 2.22 euro 1.2 072 ARCELOR MITTAL 1.31 euro 1.2 073 TEC. REUNIDAS 0.93 euro 1.2 074 OBRASCON HUARTE 0.87 euro 1.2 076 EBRO FOODS 0.61 euro 1.2 078 IAG 0.21 euro 1.2 080 CAIXABANK 0.63 euro 1.2 081 BANKIA 0.20 euro 1.2 082 DIA 0.47 euro 1.2 085 VISCOFAN 0.68 euro 1.2 087 AENA 5.42 euro 1.2 088 MERLIN 2.11 euro 1.2

089 CELLNEX 0.62 euro 1.2 090 MELIA 1.38 euro 1.2 091 CIE AUTOMOTIVE 1.15 euro 1.2 092 ENCE 1.21 euro 1.2

Fixed Time Spread Margin Products

Fixed Margin Class Product Spread Margin 099 IBEX 35 IMPACTO DIV YEAR 1 50 points 199 IBEX 35 IMPACTO DIV YEAR 2 50 points 299 IBEX 35 IMPACTO DIV YEARS 3-5 60 points 399 IBEX 35 IMPACTO DIV YEARS 6-8 60 points 150 DIVIDENDS BBVA YEAR 1 0.02 euro 250 DIVIDENDS BBVA YEAR 2 0.03 euro 350 DIVIDENDS BBVA YEARS 3-5 0.04 euro 450 DIVIDENDS BBVA YEARS 6-8 0.04 euro 151 DIVIDENDS IBERDROLA YEAR 1 0.02 euro 251 DIVIDENDS IBERDROLA YEAR 2 0.06 euro 351 DIVIDENDS IBERDROLA YEARS 3-5 0.06 euro 451 DIVIDENDS IBERDROLA YEARS 6-8 0.06 euro 152 DIVIDENDS SANTANDER YEAR 1 0.02 euro 252 DIVIDENDS SANTANDER YEAR 2 0.03 euro 352 DIVIDENDS SANTANDER YEARS 3-5 0.03 euro 452 DIVIDENDS SANTANDER YEARS 6-8 0.03 euro

Circular C-DF-13/2020 5/9

Fixed Margin Class Product Spread Margin 153 DIVIDENDS REPSOL YEAR 1 0.02 euro 253 DIVIDENDS REPSOL YEAR 2 0.14 euro 353 DIVIDENDS REPSOL YEARS 3-5 0.13 euro 453 DIVIDENDS REPSOL YEARS 6-8 0.13 euro 154 DIVIDENDS TELEFÓNICA YEAR 1 0.06 euro 254 DIVIDENDS TELEFÓNICA YEAR 2 0.06 euro 354 DIVIDENDS TELEFÓNICA YEARS 3-5 0.07 euro 454 DIVIDENDS TELEFÓNICA YEARS 6-8 0.07 euro 155 DIVIDENDS INDITEX YEAR 1 0.07 euro 255 DIVIDENDS INDITEX YEAR 2 0.12 euro 355 DIVIDENDS INDITEX YEARS 3-5 0.14 euro 455 DIVIDENDS INDITEX YEARS 6-8 0.14 euro 157 DIVIDENDS NATURGY YEAR 1 0.12 euro 257 DIVIDENDS NATURGY YEAR 2 0.28 euro 357 DIVIDENDS NATURGY YEARS 3-5 0.28 euro 457 DIVIDENDS NATURGY YEARS 6-8 0.28 euro 158 DIVIDENDS CAIXABANK YEAR 1 0.02 euro 258 DIVIDENDS CAIXABANK YEAR 2 0.02 euro 358 DIVIDENDS CAIXABANK YEARS 3-5 0.02 euro 458 DIVIDENDS CAIXABANK YEARS 6-8 0.02 euro

4.- INTER-COMMODITY SPREAD CREDITS

Inter-commodity spread credits, expressed as percentages, are shown in the following table:

Priority Classes (Underlying) Deltas for 1 spread Margin Credit

1st IBEX 35 BANKS / SANTANDER 738 / 100,000 65% / 65%

2nd IBEX 35 BANKS / BBVA 958 / 100,000 60% / 60%

3rd BBVA / SANTANDER 70 / 100 55% / 55%

4th IBEX 35 / BBVA 71 / 100,000 50% / 50%

5th CAIXABANK / BBVA 128 / 100 50% / 50%

6th IBEX 35 BANKS / BANKINTER 1,096 / 100,000 50% / 50%

7th BBVA / BANKINTER 101 / 100 50% / 50%

8th IBEX 35 / IBEX 35 BANKS 75 / 1,000 45% / 45%

9th IBEX 35 ENERGY / IBERDROLA 718 / 100,000 45% / 45%

10th IBEX 35 / SANTANDER 58 / 100,000 45% / 45%

11th IBEX 35 BANKS / CAIXABANK 546 / 100,000 45% / 45%

12th BANCO SABADELL / SANTANDER 276 / 100 40% / 40%

13th IBEX 35 BANKS / BANCO SABADELL 194 / 100,000 40% / 40%

14th SANTANDER / BANKINTER 130 / 100 40% / 40%

15th IBEX 35 / TELEFÓNICA 70 / 100,000 35% / 35%

Circular C-DF-13/2020 6/9

Priority Classes (Underlying) Deltas for 1 spread Margin Credit

16th BANCO SABADELL / BANKINTER 449 / 100 30% / 30%

17th IBERDROLA / ENDESA 186 / 100 30% / 30%

18th IBEX 35 ENERGY / ENDESA 1684 / 100,000 30% / 30%

19th CAIXABANK / SANTANDER 88 / 100 25% / 25%

20th IBEX 35 / BANKINTER 79 / 100,000 25% / 25%

21st NATURGY / ENDESA 68 / 100 25% / 25%

22nd BANCO SABADELL / BBVA 361 / 100 25% / 25%

23rd CAIXABANK / BANKINTER 158 / 100 25% / 25%

24th IBEX 35 / CAIXABANK 37 / 100,000 20% / 20%

25th IBEX 35 BANKS / ARCELORMITTAL 3,499 / 100,000 20% / 20%

26th IBEX 35 / ARCELORMITTAL 300 / 100,000 20% / 20%

27th SANTANDER / ACERINOX 151 / 100 20% / 20%

28th IBEX 35 / AENA 1,485 / 100,000 20% / 20%

29th IBEX 35 / REPSOL 146 / 100,000 20% / 20%

30th IBEX 35 / BANCO SABADELL 15 / 100,000 20% / 20%

31st IBEX 35 / INDITEX 313 / 100,000 15% / 15%

32nd IBEX 35 / BANKIA 27 / 100,000 15% / 15%

33th IBEX 35 / MAPFRE 27 / 100,000 15% / 15%

34th ARCELORMITTAL / BBVA 13 / 100 15% / 15%

35th IBEX 35 BANKS / ACERINOX 1,205 / 100,000 15% / 15%

5.- DETERMINATION OF THE INITIAL MARGIN AT THE MARGIN ACCOUNT LEVEL

Initial Margins are jointly calculated for all Margin Classes.

6.- INCREASE OF THE INITIAL MARGIN PARAMETERS DEPENDING ON THE RESULT OF THE RETROSPECTIVE TESTS

According to Article 49 (EU) Regulation 648 / 2012, which defines the performance of back testing, developed in the BME CLEARING’s Back Testing Instruction, and Article 56 (1) of the Delegated Regulation (EU) 153 / 2013, if at any time the daily back tests performed would prove that the initial margin coverage does not reach the confidence level that the CCP must achieve, initial margin parameters included in this Circular can be immediately increased.

Circular C-DF-13/2020 7/9

7.- CALCULATING THE POSITION MARGIN AT ACCOUNT LEVEL FOR CONTINUOUS CURRENCY FUTURES CONTRACTS

The values of the parameters used for calculating the Position Margin for this type of contract are given below:

- Number of sessions to use. At least the last 2,522 sessions (252 sessions for a period of 10 years plus two days). - MPOR. Estimated number of days needed to close a position of a position in a generic manner, both client accounts and proprietary accounts: 2 days (EMIR Regulation). - IM Buffer. Multiplicative factor that applies to the resulting Initial Margin Max (Base IM, IM Floor). The IM Buffer applies when the number of days between the next settlement date and the settlement date immediately following it, are far from 2 days.

The multiplicative factor will be √difference in days. 2 - Scenarios analysed. Scenarios that are analysed. There will be at least 2,520 scenarios. - Historical VaR confidence level. Confidence level used to calculate the Base IM according to historical VaR: 99% (EMIR regulation). - Worst-case scenario with historical VaR confidence level. Using the historical VaR confidence level of 99% and 2,520 scenarios analysed, the 25th worst-case scenario for the account is the selected scenario. - Largest-loss scenarios. Number of scenarios used in the Expected Shortfall (ES) algorithm to obtain the value of the expected shortfall for the account by using an average of the worst-case scenarios. The 18 worst scenarios for each account are selected. - IM Floor. Minimum percentage of initial margin according to Article 27.4 of Delegated Regulation (EU) 153/2013. The minimum percentage is 20%. - Decay factor. For each pair of currency, spot and forward, the value between 0 and 1 that is used in the Exponentially Weighted Moving Average (EWMA) method. - Risk factor Buffer. Multiplier factor established for a Continuous on the “XY” currency pair.

Spot Forward Risk factor Underlying Decay points Decay Buffer Factor Factor Currency X /

Currency Y

Circular C-DF-13/2020 8/9

- Market capacity and illiquidity surcharge. The following table shows an example of the Member Survey:

Multiplier and illiquidity surcharge (in pips) Maximum X1 – X2 – X5 – X10 – X50 – Underlying volume in Maximum Twice Five times Ten times Fifty times market volume in volume in volume in volume in volume in Market market market market market Currency X / Currency Y

- Solvency Multiplier. Parameter used to increase the Initial Margin of a margin Account for Members with low solvency. The increase starts in the lowest solvency levels, according to what is defined in the Calculation of Shareholders Equity and Solvency Circular, as shown in the following table:

Member Solvency Ratio Multiplier Multiplier S7 1.25 S8 1.50 S9 1.80

Clearing Members who are downgraded will have a period of five business days to adjust the additional initial margin amount. Thus, the multiplier that corresponds to the new solvency level will be updated by the CCP on the following business day after these five business days.

Circular C-DF-13/2020 9/9