diff --git a/protocol/app/upgrades/v5.0.0/upgrade.go b/protocol/app/upgrades/v5.0.0/upgrade.go
index b7442debce..5935fa19f2 100644
--- a/protocol/app/upgrades/v5.0.0/upgrade.go
+++ b/protocol/app/upgrades/v5.0.0/upgrade.go
@@ -36,7 +36,7 @@ func perpetualsUpgrade(
 	subaccounts := subaccountsKeeper.GetAllSubaccount(ctx)
 	for _, sa := range subaccounts {
 		for _, perpPosition := range sa.PerpetualPositions {
-			if perpPosition.Quantums.BigInt().Sign() <= 0 {
+			if perpPosition.Quantums.Sign() <= 0 {
 				// Only record positive positions for total open interest.
 				// Total negative position size should be equal to total positive position size.
 				continue
diff --git a/protocol/dtypes/serializable_int.go b/protocol/dtypes/serializable_int.go
index befbcd1ebd..c187f17b1f 100644
--- a/protocol/dtypes/serializable_int.go
+++ b/protocol/dtypes/serializable_int.go
@@ -57,7 +57,7 @@ func (i SerializableInt) String() string {
 	if i.IsNil() {
 		return "nil"
 	}
-	return i.BigInt().String()
+	return i.i.String()
 }
 
 // Cmp compares x and y and returns:
@@ -77,7 +77,15 @@ func (i SerializableInt) Cmp(j SerializableInt) int {
 	if j.IsNil() {
 		return 1
 	}
-	return i.BigInt().Cmp(j.BigInt())
+	return i.i.Cmp(j.i)
+}
+
+// Sign returns zero if nil, otherwise returns the sign of the Int.
+func (i SerializableInt) Sign() int {
+	if i.IsNil() {
+		return 0
+	}
+	return i.i.Sign()
 }
 
 // Marshal implements the gogo proto custom type interface.
diff --git a/protocol/x/clob/types/equity_tier_limit_config.go b/protocol/x/clob/types/equity_tier_limit_config.go
index 34e48c22b0..1b5cfad722 100644
--- a/protocol/x/clob/types/equity_tier_limit_config.go
+++ b/protocol/x/clob/types/equity_tier_limit_config.go
@@ -86,7 +86,7 @@ func (l EquityTierLimit) validate(field string, maxOrders uint32) error {
 			l,
 		)
 	}
-	if l.UsdTncRequired.IsNil() || l.UsdTncRequired.BigInt().Sign() < 0 {
+	if l.UsdTncRequired.IsNil() || l.UsdTncRequired.Sign() < 0 {
 		return errorsmod.Wrapf(
 			ErrInvalidEquityTierLimitConfig,
 			"%d is not a valid UsdTncRequired for %s equity tier limit %+v",
diff --git a/protocol/x/govplus/types/tx.go b/protocol/x/govplus/types/tx.go
index 430bde6276..e760284a09 100644
--- a/protocol/x/govplus/types/tx.go
+++ b/protocol/x/govplus/types/tx.go
@@ -2,7 +2,6 @@ package types
 
 import (
 	"fmt"
-	"math/big"
 
 	errorsmod "cosmossdk.io/errors"
 	"cosmossdk.io/math"
@@ -33,7 +32,7 @@ func (msg *MsgSlashValidator) ValidateBasic() error {
 		)
 	}
 
-	if msg.TokensAtInfractionHeight.BigInt().Cmp(big.NewInt(0)) != 1 {
+	if msg.TokensAtInfractionHeight.Sign() <= 0 {
 		return ErrInvalidTokensAtInfractionHeight
 	}
 
diff --git a/protocol/x/perpetuals/simulation/genesis_test.go b/protocol/x/perpetuals/simulation/genesis_test.go
index 2b21cd89a2..982ebf3618 100644
--- a/protocol/x/perpetuals/simulation/genesis_test.go
+++ b/protocol/x/perpetuals/simulation/genesis_test.go
@@ -69,7 +69,7 @@ func TestRandomizedGenState(t *testing.T) {
 			require.True(t, perp.Params.DefaultFundingPpm > -int32(lib.OneMillion))
 			require.True(t, perp.Params.DefaultFundingPpm < int32(lib.OneMillion))
 
-			require.True(t, perp.FundingIndex.BigInt().Sign() == 0)
+			require.True(t, perp.FundingIndex.Sign() == 0)
 		}
 	}
 }
diff --git a/protocol/x/ratelimit/types/params.go b/protocol/x/ratelimit/types/params.go
index 4d3917a96f..291f5b64b6 100644
--- a/protocol/x/ratelimit/types/params.go
+++ b/protocol/x/ratelimit/types/params.go
@@ -57,7 +57,7 @@ func (p *LimitParams) Validate() error {
 			return ErrInvalidRateLimitPeriod
 		}
 
-		if limiter.BaselineMinimum.BigInt().Sign() <= 0 {
+		if limiter.BaselineMinimum.Sign() <= 0 {
 			return ErrInvalidBaselineMinimum
 		}
 
diff --git a/protocol/x/rewards/keeper/keeper.go b/protocol/x/rewards/keeper/keeper.go
index affbadee77..e3b9d67938 100644
--- a/protocol/x/rewards/keeper/keeper.go
+++ b/protocol/x/rewards/keeper/keeper.go
@@ -211,7 +211,7 @@ func (k Keeper) SetRewardShare(
 	ctx sdk.Context,
 	rewardShare types.RewardShare,
 ) error {
-	if rewardShare.Weight.BigInt().Cmp(lib.BigInt0()) <= 0 {
+	if rewardShare.Weight.Sign() <= 0 {
 		return errorsmod.Wrapf(
 			types.ErrNonpositiveWeight,
 			"Invalid weight %v",
diff --git a/protocol/x/subaccounts/keeper/subaccount_helper.go b/protocol/x/subaccounts/keeper/subaccount_helper.go
index 79b14fbc2e..799704184a 100644
--- a/protocol/x/subaccounts/keeper/subaccount_helper.go
+++ b/protocol/x/subaccounts/keeper/subaccount_helper.go
@@ -189,7 +189,7 @@ func UpdateAssetPositions(
 				ap.Quantums = dtypes.NewIntFromBigInt(newQuantums)
 
 				// Handle the case where the position is now closed.
-				if ap.Quantums.BigInt().Sign() == 0 {
+				if ap.Quantums.Sign() == 0 {
 					delete(assetPositionsMap, au.AssetId)
 				}
 			} else {
diff --git a/protocol/x/subaccounts/types/position_size.go b/protocol/x/subaccounts/types/position_size.go
index ccdad8100c..39688ae2eb 100644
--- a/protocol/x/subaccounts/types/position_size.go
+++ b/protocol/x/subaccounts/types/position_size.go
@@ -56,7 +56,7 @@ func (m *AssetPosition) GetBigQuantums() *big.Int {
 		return new(big.Int)
 	}
 
-	if m.Quantums.BigInt().Sign() == 0 {
+	if m.Quantums.Sign() == 0 {
 		panic(errorsmod.Wrapf(
 			ErrAssetPositionZeroQuantum,
 			"asset position (asset Id: %v) has zero quantum",
@@ -92,7 +92,7 @@ func (m *PerpetualPosition) GetBigQuantums() *big.Int {
 		return new(big.Int)
 	}
 
-	if m.Quantums.BigInt().Sign() == 0 {
+	if m.Quantums.Sign() == 0 {
 		panic(errorsmod.Wrapf(
 			ErrPerpPositionZeroQuantum,
 			"perpetual position (perpetual Id: %v) has zero quantum",
diff --git a/protocol/x/vault/keeper/orders.go b/protocol/x/vault/keeper/orders.go
index 5d8054dcc5..2e17fd9c13 100644
--- a/protocol/x/vault/keeper/orders.go
+++ b/protocol/x/vault/keeper/orders.go
@@ -32,7 +32,7 @@ func (k Keeper) RefreshAllVaultOrders(ctx sdk.Context) {
 		k.cdc.MustUnmarshal(totalSharesIterator.Value(), &totalShares)
 
 		// Skip if TotalShares is non-positive.
-		if totalShares.NumShares.BigInt().Sign() <= 0 {
+		if totalShares.NumShares.Sign() <= 0 {
 			continue
 		}
 
diff --git a/protocol/x/vault/keeper/shares.go b/protocol/x/vault/keeper/shares.go
index 10f2460a6f..c9c7b6ada0 100644
--- a/protocol/x/vault/keeper/shares.go
+++ b/protocol/x/vault/keeper/shares.go
@@ -33,7 +33,7 @@ func (k Keeper) SetTotalShares(
 	vaultId types.VaultId,
 	totalShares types.NumShares,
 ) error {
-	if totalShares.NumShares.BigInt().Sign() < 0 {
+	if totalShares.NumShares.Sign() < 0 {
 		return types.ErrNegativeShares
 	}
 
@@ -81,7 +81,7 @@ func (k Keeper) SetOwnerShares(
 	owner string,
 	ownerShares types.NumShares,
 ) error {
-	if ownerShares.NumShares.BigInt().Sign() < 0 {
+	if ownerShares.NumShares.Sign() < 0 {
 		return types.ErrNegativeShares
 	}
 
diff --git a/protocol/x/vault/keeper/vault.go b/protocol/x/vault/keeper/vault.go
index 6bcd3ceb75..1143ca6c1c 100644
--- a/protocol/x/vault/keeper/vault.go
+++ b/protocol/x/vault/keeper/vault.go
@@ -59,7 +59,7 @@ func (k Keeper) DecommissionNonPositiveEquityVaults(
 		k.cdc.MustUnmarshal(totalSharesIterator.Value(), &totalShares)
 
 		// Skip if TotalShares is non-positive.
-		if totalShares.NumShares.BigInt().Sign() <= 0 {
+		if totalShares.NumShares.Sign() <= 0 {
 			continue
 		}
 
diff --git a/protocol/x/vault/types/params.go b/protocol/x/vault/types/params.go
index 8d4a762947..46291f2ff4 100644
--- a/protocol/x/vault/types/params.go
+++ b/protocol/x/vault/types/params.go
@@ -38,7 +38,7 @@ func (p Params) Validate() error {
 		return ErrInvalidOrderExpirationSeconds
 	}
 	// Activation threshold quote quantums must be non-negative.
-	if p.ActivationThresholdQuoteQuantums.BigInt().Sign() < 0 {
+	if p.ActivationThresholdQuoteQuantums.Sign() < 0 {
 		return ErrInvalidActivationThresholdQuoteQuantums
 	}