# UMIP 168 -Add uSPAC10g as price identifier

**URL:** <https://discourse.uma.xyz/t/umip-168-add-uspac10g-as-price-identifier/1835>\
**Category:** technical UMIPs\
**Created:** [October 28, 2022, 7:22am UTC](https://discourse.uma.xyz/t/umip-168-add-uspac10g-as-price-identifier/1835 "2022-10-28T07:22:59Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![binomfx](https://yyz2.discourse-cdn.com/flex032/user_avatar/discourse.uma.xyz/binomfx/32/448_2.png) [@binomfx](https://discourse.uma.xyz/u/binomfx)\
**Post date:** [October 28, 2022, 7:22am UTC](https://discourse.uma.xyz/t/umip-168-add-uspac10g-as-price-identifier/1835/1 "2022-10-28T07:22:59Z")

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The DVM should support price requests for **uSPAC10g** price identifier.  
The purpose of this price identifier is to create synthetic token, price of which is linked to the value of index of 10 most active SPACs (Special Purpose Acquisition Companies) shares.  
That synthetic token can be used for creating speculative strategies at IPO market.  
**The difference from the existing UMIP-140** is that the proposed price ID does not require manually changing the basket of 10 SPAC shares on a quarterly basis.  
_The index basket is formed weekly by requesting top-10 gainers from the spacHero database._

> <https://github.com/UMAprotocol/UMIPs/blob/master/UMIPs/umip-168.md>

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**Author:** ![Mhairi](https://yyz2.discourse-cdn.com/flex032/user_avatar/discourse.uma.xyz/mhairi/32/48_2.png) [@Mhairi](https://discourse.uma.xyz/u/Mhairi)\
**Post date:** [November 15, 2022, 10:24am UTC](https://discourse.uma.xyz/t/umip-168-add-uspac10g-as-price-identifier/1835/2 "2022-11-15T10:24:36Z")

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Outcome of this week’s community call - 14th November 2022

NO GO

- Correction factor which was in previous UMIP 140 has been removed, clarification sought on motivation and impact
- Requires additional details on implimentation to clarify the resolution path.
- Clarification sought on how the “switch” mechanism that updates the basket is implemented

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**Author:** ![binomfx](https://yyz2.discourse-cdn.com/flex032/user_avatar/discourse.uma.xyz/binomfx/32/448_2.png) [@binomfx](https://discourse.uma.xyz/u/binomfx)\
**Post date:** [November 15, 2022, 5:48pm UTC](https://discourse.uma.xyz/t/umip-168-add-uspac10g-as-price-identifier/1835/3 "2022-11-15T17:48:59Z")

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- Correction factor which was in previous UMIP 140 has been removed, clarification sought on motivation and impact  
_Explanations are given in the answer to @pemulis’ questions in the PR discussion._

- Requires additional details on implimentation to clarify the resolution path.  
_We are doing this._

- Clarification sought on how the “switch” mechanism that updates the basket is implemented  
_Clarification is included in UMIP in response to @pemulis’ question in PR_

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**Author:** ![Admin-UMA](https://avatars.discourse-cdn.com/v4/letter/a/f0a364/32.png) [@Admin-UMA](https://discourse.uma.xyz/u/Admin-UMA)\
**Post date:** [November 21, 2022, 4:40pm UTC](https://discourse.uma.xyz/t/umip-168-add-uspac10g-as-price-identifier/1835/4 "2022-11-21T16:40:05Z")

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Outcome of this week’s community call - 21st November 2022

NO GO

- Awaiting testing on the effects of the current price feed implimentation
- Awaiting analysis of potential for liquidation waves.
- Implementation design under further consideration following the above.

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**Author:** ![Admin-UMA](https://avatars.discourse-cdn.com/v4/letter/a/f0a364/32.png) [@Admin-UMA](https://discourse.uma.xyz/u/Admin-UMA)\
**Post date:** [November 28, 2022, 4:42pm UTC](https://discourse.uma.xyz/t/umip-168-add-uspac10g-as-price-identifier/1835/5 "2022-11-28T16:42:55Z")

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Outcome of this week’s community call - 28th November 2022

GO with conditions

- Submitted price feed implimentation review to confirm that it works as expected.