Monthly Schedule of Portfolio Holdings of Money Market Funds (n-mfp)

1. Identity Information

Is this an electronic copy of an official filing submitted in paper format? No

Report date: December 31, 2012

CIK Number of Registrant: 710124

EDGAR Series Identifier: S000023949

Total number of share classes in the series: 1

Do you anticipate this will be the fund's final filing on Form N-MFP? No

If this is not a final filing, has the fund acquired or merged with another fund since the last filing? No

Part 1: Information about the Fund

A. Series-Level Information

Item 1. Securities Act File Number: 2-80543

Item 2. Investment Adviser

Adviser	SEC file number
Northern Trust Investments, Inc.	801-33358

Item 3. Sub-Adviser. If a fund has one or more sub-advisers, disclose the name of each sub-adviser

Item 4. Independent Public Accountant

Name	City	State
Ernst & Young LLP	Chicago	IL

Item 5. Administrator. If a fund has one or more administrators, disclose the name of each administrator

Administrator
Northern Trust Investments, Inc.

Item 6. Transfer Agent

Name	CIK number	SEC file number
The Northern Trust Company	838981	85-05127

Item 7. Master-Feeder Funds. Is this a feeder fund? No

a. Identify the master fund by CIK

b. Securities Act file number of the master fund

c. EDGAR series identifier of the master fund

Item 8. Master-Feeder Funds. Is this a master fund? No

a. If this is a master fund, identify all feeder funds by CIK or, if the fund does not have a CIK, by name

b. Securities Act file number of each feeder fund

c. EDGAR series identifier of each feeder fund

Item 9. Is this series primarily used to fund insurance company separate accounts? No

Item 10. Category. Indicate the category that most closely identifies the money market fund: Treasury

Item 11. Dollar weighted average portfolio maturity: 50 days

Item 12. Dollar weighted average life maturity. Calculate the dollar weighted average portfolio maturity without reference to the exceptions in rule 2a-7(d) regarding interest rate readjustments: 50 days

Item 13. Total value of portfolio securities at amortized cost, to the nearest cent: $10,523,820,501.70

Item 14. Total value of other assets, to the nearest cent: $784,318,722.77

Item 15. Total value of liabilities, to the nearest cent: $67,206,444.53

Item 16. Net assets of the series, to the nearest cent: $11,240,932,779.94

Item 17. 7-day gross yield: 0.15%

Item 18. Shadow Price of the Series

a. The net asset value per share most recently calculated using available market quotations (or an appropriate substitute that reflects current market conditions), including the value of any capital support agreement, to the nearest hundredth of a cent.
$1.0000

b. Date as of which the market-based net asset value disclosed in item 18a was calculated.
2012-12-31

c. The net asset value per share most recently calculated using available market quotations (or an appropriate substitute that reflects current market conditions), excluding the value of any capital support agreement, to the nearest hundredth of a cent.
$1.0000

d. Date as of which the market-based net asset value disclosed in item 18c was calculated.
2012-12-31

B. Class-Level Information. For each Class of the Series, disclose the following:

Item 19. EDGAR Class Identifier: C000070152

Item 20. Minimum Initial Investment: $5,000,000.00

Item 21. Net assets of the Class, to the nearest cent: $11,240,932,779.94

Item 22. Net asset value per share for purposes of distributions, redemptions, and repurchase, to the nearest cent: $1.00

Item 23. Net shareholder flow activity for the month ended (subscriptions less redemptions), to the nearest cent: $2,741,998,825.23

a. Gross subscriptions for the month ended (Including dividend reinvestments), to the nearest cent
$12,895,374,240.95

b. Gross redemptions for the month ended, to the nearest cent
$10,153,375,415.72

Item 24. 7-day net yield, as calculated under Item 26(a)(1) of Form N-1A: 0.01%

Item 25. Shadow Price of Each Class

b. Date as of which the market-based net asset value disclosed in item 25a was calculated.
2012-12-31

d. Date as of which the market-based net asset value disclosed in item 25c was calculated.
2012-12-31

Part II - Schedule of Portfolio Securities

Security. For each security held by the money market fund, disclose the following:

Item 26. The name of the issuer: Banc of America Securities LLC - REPO

Item 27. The title of the issue (including coupon or yield): Banc of America Securities LLC - REPO 0.160000%

Item 28. The CUSIP. If the security has a CUSIP, filers must provide the security's CUSIP pursuant to this Item and may skip Items 29 and 30: JointRepo

Item 29. Other unique identifier, if the security has a unique identifier. If a CUSIP is provided pursuant to Item 28, skip this Item: [Not Provided]

Item 30. CIK of the issuer, if the issuer has a CIK. If a CUSIP is provided pursuant to Item 28, skip this Item: [Not Provided]

Item 31. The category of investment. Indicate the category that most closely identitfies the instrument: Treasury Repurchase Agreement

Brief description: (optional): [Not Provided]

Item 32. If the security is a Repurchase agreement: is fund treating the acquisition of the repurchase agreement as the aquisition of the underlying securities (i.e. collateral) for the purposes of portfolio diversification under rule 2a-7? Yes

Name of the issuer	Maturity date	Coupon or yield	Category of investment (If Other Instrument, include a brief description)	Principal amount (to the nearest cent)	Value of collateral
Department of the Treasury	2015-12-31	2.125000	Treasury Debt	$204,920.07	$215,630.42
Department of the Treasury	2021-01-15	1.125000	Treasury Debt	$5,475,395.85	$6,800,484.35
Department of the Treasury	2041-02-15	2.125000	Treasury Debt	$15,559,610.59	$24,269,505.30

If multiple securities of an issuer are subject to the repurchase agreement, the securities may be aggregated, in which case disclose:
(a) the total principal amount and value and (b) the range of maturity dates and interest rates.

Item 33. Rating. Indicate whether the security is a rated First Tier Security, rated Second Tier Security, an Unrated Security, or no longer an Eligible Security: First Tier Security

Item 34. Name of each Designated NRSRO:

Name of Designated NRSRO	Credit rating given by the Designated NRSRO
N/A	N/A

Item 35. The maturity date as determined under rule 2a-7. Determine the maturity date, taking into account the maturity shortening provisions of rule 2a-7(d): 2013-01-01

Item 36. The final legal maturity date, taking into account any maturity date extensions that may be effected at the option of the issuer: 2013-01-01

Item 37. Does the security have a Demand Feature? No

Item 38. Does the security have a Guarantee? No

Item 39. Does the security have any enhancements, other than those identified in Items 37 and 38 above, on which the fund is relying to determine the quality, maturity or liquidity of the security? No

Item 40. The total principal amount of the security held by the series, to the nearest cent: $31,119,221.19

Item 41. The total current amortized cost, to the nearest cent: $31,119,221.19

Item 42. The percentage of the money market fund's net assets invested in the security, to the nearest hundredth of a percent: .28%

Item 43. Explanatory notes. Disclose any other information that may be material to other disclosures related to the portfolio security:

Item 44. Is this an Illiquid Security as of the date of this report? No

Item 45. The value of the security, calculated using available market quotations (or an appropriate substitute that reflects current market conditions), including the value of any capital support agreement, to the nearest cent: $31,119,221.19

Item 46. The value of the security, calculated using available market quotations (or an appropriate substitute that reflects current market conditions), excluding the value of any capital support agreement, to the nearest cent: $31,119,221.19

Security. For each security held by the money market fund, disclose the following:

Item 26. The name of the issuer: Barclays Capital Inc-REPO

Item 27. The title of the issue (including coupon or yield): TRI-PARTY BARCLAYS CAPITAL INC 0.180000%

Item 28. The CUSIP. If the security has a CUSIP, filers must provide the security's CUSIP pursuant to this Item and may skip Items 29 and 30: BZ2744BON

Item 29. Other unique identifier, if the security has a unique identifier. If a CUSIP is provided pursuant to Item 28, skip this Item: [Not Provided]

Item 30. CIK of the issuer, if the issuer has a CIK. If a CUSIP is provided pursuant to Item 28, skip this Item: [Not Provided]

Item 31. The category of investment. Indicate the category that most closely identitfies the instrument: Treasury Repurchase Agreement

Brief description: (optional): [Not Provided]

Name of the issuer	Maturity date	Coupon or yield	Category of investment (If Other Instrument, include a brief description)	Principal amount (to the nearest cent)	Value of collateral
Department of the Treasury	2014-06-30	0.250000	Treasury Debt	$4,829,000.00	$4,830,511.48
Department of the Treasury	2017-02-28	0.875000	Treasury Debt	$482,084,400.00	$489,869,530.37

Item 33. Rating. Indicate whether the security is a rated First Tier Security, rated Second Tier Security, an Unrated Security, or no longer an Eligible Security: First Tier Security

Item 34. Name of each Designated NRSRO:

Name of Designated NRSRO	Credit rating given by the Designated NRSRO
N/A	N/A

Item 35. The maturity date as determined under rule 2a-7. Determine the maturity date, taking into account the maturity shortening provisions of rule 2a-7(d): 2013-01-02

Item 36. The final legal maturity date, taking into account any maturity date extensions that may be effected at the option of the issuer: 2013-01-02

Item 37. Does the security have a Demand Feature? No

Item 38. Does the security have a Guarantee? No

Item 40. The total principal amount of the security held by the series, to the nearest cent: $485,000,000.00

Item 41. The total current amortized cost, to the nearest cent: $485,000,000.00

Item 42. The percentage of the money market fund's net assets invested in the security, to the nearest hundredth of a percent: 4.31%

Item 43. Explanatory notes. Disclose any other information that may be material to other disclosures related to the portfolio security:

Item 44. Is this an Illiquid Security as of the date of this report? No

Security. For each security held by the money market fund, disclose the following:

Item 26. The name of the issuer: BNP Paribas Securities Corp.-REPO

Item 27. The title of the issue (including coupon or yield): TRI-PARTY BNP PARIBAS SECURITIES C 0.180000%

Item 28. The CUSIP. If the security has a CUSIP, filers must provide the security's CUSIP pursuant to this Item and may skip Items 29 and 30: BN0145BON

Item 29. Other unique identifier, if the security has a unique identifier. If a CUSIP is provided pursuant to Item 28, skip this Item: [Not Provided]

Item 30. CIK of the issuer, if the issuer has a CIK. If a CUSIP is provided pursuant to Item 28, skip this Item: [Not Provided]

Item 31. The category of investment. Indicate the category that most closely identitfies the instrument: Treasury Repurchase Agreement

Brief description: (optional): [Not Provided]

Name of the issuer	Maturity date	Coupon or yield	Category of investment (If Other Instrument, include a brief description)	Principal amount (to the nearest cent)	Value of collateral
Department of the Treasury	2014-03-31	0.250000	Treasury Debt	$346,432,200.00	$346,800,065.31

Item 33. Rating. Indicate whether the security is a rated First Tier Security, rated Second Tier Security, an Unrated Security, or no longer an Eligible Security: First Tier Security

Item 34. Name of each Designated NRSRO:

Name of Designated NRSRO	Credit rating given by the Designated NRSRO
N/A	N/A

Item 35. The maturity date as determined under rule 2a-7. Determine the maturity date, taking into account the maturity shortening provisions of rule 2a-7(d): 2013-01-02

Item 36. The final legal maturity date, taking into account any maturity date extensions that may be effected at the option of the issuer: 2013-01-02

Item 37. Does the security have a Demand Feature? No

Item 38. Does the security have a Guarantee? No

Item 40. The total principal amount of the security held by the series, to the nearest cent: $340,000,000.00

Item 41. The total current amortized cost, to the nearest cent: $340,000,000.00

Item 42. The percentage of the money market fund's net assets invested in the security, to the nearest hundredth of a percent: 3.02%

Item 43. Explanatory notes. Disclose any other information that may be material to other disclosures related to the portfolio security:

Item 44. Is this an Illiquid Security as of the date of this report? No

Security. For each security held by the money market fund, disclose the following:

Item 26. The name of the issuer: BNP Paribas Securities Corp.-REPO

Item 27. The title of the issue (including coupon or yield): TRI-PARTY BNP PARIBAS SECURITIES C 0.150000%

Item 28. The CUSIP. If the security has a CUSIP, filers must provide the security's CUSIP pursuant to this Item and may skip Items 29 and 30: BN0178BON

Item 29. Other unique identifier, if the security has a unique identifier. If a CUSIP is provided pursuant to Item 28, skip this Item: [Not Provided]

Item 30. CIK of the issuer, if the issuer has a CIK. If a CUSIP is provided pursuant to Item 28, skip this Item: [Not Provided]

Item 31. The category of investment. Indicate the category that most closely identitfies the instrument: Treasury Repurchase Agreement

Brief description: (optional): [Not Provided]

Name of the issuer	Maturity date	Category of investment (If Other Instrument, include a brief description)	Principal amount (to the nearest cent)	Value of collateral
Department of the Treasury	2013-02-15	Treasury Debt	$5,420,996.00	$5,420,508.11
Department of the Treasury	2013-05-15	Treasury Debt	$5,517,727.00	$5,517,009.70
Department of the Treasury	2014-02-15	Treasury Debt	$2,605,239.00	$2,599,012.48
Department of the Treasury	2014-08-15	Treasury Debt	$5,568,128.00	$5,544,741.86
Department of the Treasury	2015-02-15	Treasury Debt	$5,399,128.00	$5,364,627.57
Department of the Treasury	2018-08-15	Treasury Debt	$6,106,096.00	$5,806,775.17
Department of the Treasury	2018-11-15	Treasury Debt	$6,741,427.00	$6,386,018.97
Department of the Treasury	2022-08-15	Treasury Debt	$6,993,215.00	$5,897,448.14
Department of the Treasury	2024-08-15	Treasury Debt	$8,324,965.00	$6,502,297.16
Department of the Treasury	2025-05-15	Treasury Debt	$3,047,601.00	$2,310,233.94
Department of the Treasury	2026-05-15	Treasury Debt	$8,374,427.00	$6,095,912.90
Department of the Treasury	2026-11-15	Treasury Debt	$8,674,427.00	$6,186,080.87
Department of the Treasury	2027-11-15	Treasury Debt	$8,371,502.00	$5,738,413.48
Department of the Treasury	2028-08-15	Treasury Debt	$8,328,715.00	$5,554,086.88
Department of the Treasury	2029-08-15	Treasury Debt	$9,115,240.00	$5,860,096.64
Department of the Treasury	2030-02-15	Treasury Debt	$8,865,240.00	$5,597,157.93
Department of the Treasury	2030-08-15	Treasury Debt	$8,863,240.00	$5,494,411.11
Department of the Treasury	2031-02-15	Treasury Debt	$9,000,000.00	$5,585,760.00
Department of the Treasury	2032-02-15	Treasury Debt	$9,430,865.00	$5,539,407.18

Item 33. Rating. Indicate whether the security is a rated First Tier Security, rated Second Tier Security, an Unrated Security, or no longer an Eligible Security: First Tier Security

Item 34. Name of each Designated NRSRO:

Name of Designated NRSRO	Credit rating given by the Designated NRSRO
N/A	N/A

Item 35. The maturity date as determined under rule 2a-7. Determine the maturity date, taking into account the maturity shortening provisions of rule 2a-7(d): 2013-01-18

Item 36. The final legal maturity date, taking into account any maturity date extensions that may be effected at the option of the issuer: 2013-01-18

Item 37. Does the security have a Demand Feature? No

Item 38. Does the security have a Guarantee? No

Item 40. The total principal amount of the security held by the series, to the nearest cent: $100,000,000.00

Item 41. The total current amortized cost, to the nearest cent: $100,000,000.00

Item 42. The percentage of the money market fund's net assets invested in the security, to the nearest hundredth of a percent: .89%

Item 43. Explanatory notes. Disclose any other information that may be material to other disclosures related to the portfolio security:

Item 44. Is this an Illiquid Security as of the date of this report? No

Security. For each security held by the money market fund, disclose the following:

Item 26. The name of the issuer: BNP Paribas Securities Corp.-REPO

Item 27. The title of the issue (including coupon or yield): TRI-PARTY BNP PARIBAS SECURITIES C 0.150000%

Item 28. The CUSIP. If the security has a CUSIP, filers must provide the security's CUSIP pursuant to this Item and may skip Items 29 and 30: BN0869BON

Item 29. Other unique identifier, if the security has a unique identifier. If a CUSIP is provided pursuant to Item 28, skip this Item: [Not Provided]

Item 30. CIK of the issuer, if the issuer has a CIK. If a CUSIP is provided pursuant to Item 28, skip this Item: [Not Provided]

Item 31. The category of investment. Indicate the category that most closely identitfies the instrument: Treasury Repurchase Agreement

Brief description: (optional): [Not Provided]

Name of the issuer	Maturity date	Category of investment (If Other Instrument, include a brief description)	Principal amount (to the nearest cent)	Value of collateral
Department of the Treasury	2014-11-15	Treasury Debt	$9,503,727.00	$9,453,737.40
Department of the Treasury	2016-05-15	Treasury Debt	$9,819,427.00	$9,668,404.21
Department of the Treasury	2016-08-15	Treasury Debt	$7,842,128.00	$7,700,420.75
Department of the Treasury	2016-11-15	Treasury Debt	$8,258,427.00	$8,086,486.55
Department of the Treasury	2018-05-15	Treasury Debt	$9,543,427.00	$9,119,030.80
Department of the Treasury	2020-05-15	Treasury Debt	$10,021,427.00	$9,114,688.29
Department of the Treasury	2021-05-15	Treasury Debt	$10,156,427.00	$8,945,273.08
Department of the Treasury	2023-05-15	Treasury Debt	$8,374,427.00	$6,864,936.53
Department of the Treasury	2023-11-15	Treasury Debt	$10,219,427.00	$8,215,192.98
Department of the Treasury	2025-05-15	Treasury Debt	$5,949,826.00	$4,510,265.60
Department of the Treasury	2026-08-15	Treasury Debt	$10,464,965.00	$7,538,960.79
Department of the Treasury	2030-11-15	Treasury Debt	$13,849,002.00	$8,509,103.81
Department of the Treasury	2042-11-15	Treasury Debt	$13,324,000.00	$5,273,505.96

Item 33. Rating. Indicate whether the security is a rated First Tier Security, rated Second Tier Security, an Unrated Security, or no longer an Eligible Security: First Tier Security

Item 34. Name of each Designated NRSRO:

Name of Designated NRSRO	Credit rating given by the Designated NRSRO
N/A	N/A