diff --git a/modules/adrelevantisBidAdapter.js b/modules/adrelevantisBidAdapter.js
index 73077241c3b..40dd0f2d875 100644
--- a/modules/adrelevantisBidAdapter.js
+++ b/modules/adrelevantisBidAdapter.js
@@ -445,6 +445,13 @@ function bidToTag(bid) {
   tag.disable_psa = true;
   if (bid.params.position) {
     tag.position = {'above': 1, 'below': 2}[bid.params.position] || 0;
+  } else {
+    let mediaTypePos = deepAccess(bid, `mediaTypes.banner.pos`) || deepAccess(bid, `mediaTypes.video.pos`);
+    // only support unknown, atf, and btf values for position at this time
+    if (mediaTypePos === 0 || mediaTypePos === 1 || mediaTypePos === 3) {
+      // ortb spec treats btf === 3, but our system interprets btf === 2; so converting the ortb value here for consistency
+      tag.position = (mediaTypePos === 3) ? 2 : mediaTypePos;
+    }
   }
   if (bid.params.trafficSourceCode) {
     tag.traffic_source_code = bid.params.trafficSourceCode;
diff --git a/modules/gamoshiBidAdapter.js b/modules/gamoshiBidAdapter.js
index 6b3135be355..2d97290df88 100644
--- a/modules/gamoshiBidAdapter.js
+++ b/modules/gamoshiBidAdapter.js
@@ -127,7 +127,7 @@ export const spec = {
 
       const imp = {
         id: transactionId,
-        instl: deepAccess(bidRequest.ortb2Imp, 'instl') === 1 || params.instl === 1 ? 1 : 0,
+        instl: deepAccess(bidderRequest.ortb2Imp, 'instl') === 1 || params.instl === 1 ? 1 : 0,
         tagid: adUnitCode,
         bidfloor: helper.getBidFloor(bidRequest) || 0,
         bidfloorcur: 'USD',
@@ -143,7 +143,7 @@ export const spec = {
             banner: {
               w: sizes.length ? sizes[0][0] : 300,
               h: sizes.length ? sizes[0][1] : 250,
-              pos: params.pos || 0,
+              pos: deepAccess(bidderRequest, 'mediaTypes.banner.pos') || params.pos || 0,
               topframe: inIframe() ? 0 : 1
             }
           });
@@ -157,7 +157,7 @@ export const spec = {
           const videoImp = Object.assign({}, imp, {
             video: {
               protocols: bidRequest.mediaTypes.video.protocols || params.protocols || [1, 2, 3, 4, 5, 6],
-              pos: params.pos || 0,
+              pos: deepAccess(bidRequest, 'mediaTypes.video.pos') || params.pos || 0,
               ext: {
                 context: mediaTypes.video.context
               },
diff --git a/modules/pixfutureBidAdapter.js b/modules/pixfutureBidAdapter.js
index aa2a12cc513..231ecf08782 100644
--- a/modules/pixfutureBidAdapter.js
+++ b/modules/pixfutureBidAdapter.js
@@ -228,6 +228,13 @@ function bidToTag(bid) {
   }
   if (bid.params.position) {
     tag.position = {'above': 1, 'below': 2}[bid.params.position] || 0;
+  } else {
+    let mediaTypePos = deepAccess(bid, `mediaTypes.banner.pos`) || deepAccess(bid, `mediaTypes.video.pos`);
+    // only support unknown, atf, and btf values for position at this time
+    if (mediaTypePos === 0 || mediaTypePos === 1 || mediaTypePos === 3) {
+      // ortb spec treats btf === 3, but our system interprets btf === 2; so converting the ortb value here for consistency
+      tag.position = (mediaTypePos === 3) ? 2 : mediaTypePos;
+    }
   }
   if (bid.params.trafficSourceCode) {
     tag.traffic_source_code = bid.params.trafficSourceCode;
diff --git a/modules/smilewantedBidAdapter.js b/modules/smilewantedBidAdapter.js
index 73bd6101670..f41874c9753 100644
--- a/modules/smilewantedBidAdapter.js
+++ b/modules/smilewantedBidAdapter.js
@@ -37,6 +37,11 @@ export const spec = {
         transactionId: bid.transactionId,
         timeout: config.getConfig('bidderTimeout'),
         bidId: bid.bidId,
+        /** positionType is undocumented
+        It is unclear what this parameter means.
+        If it means the same as pos in openRTB,
+        It should read from openRTB object
+        or from mediaTypes.banner.pos */
         positionType: bid.params.positionType || '',
         prebidVersion: '$prebid.version$'
       };
diff --git a/modules/spotxBidAdapter.js b/modules/spotxBidAdapter.js
index 2fd403058d1..d5bf685976d 100644
--- a/modules/spotxBidAdapter.js
+++ b/modules/spotxBidAdapter.js
@@ -194,6 +194,10 @@ export const spec = {
 
       if (getBidIdParameter('position', bid.params) != '') {
         spotxReq.video.ext.pos = getBidIdParameter('position', bid.params);
+      } else {
+        if (deepAccess(bid, 'mediaTypes.video.pos')) {
+          spotxReq.video.ext.pos = deepAccess(bid, 'mediaTypes.video.pos');
+        }
       }
 
       if (bid.crumbs && bid.crumbs.pubcid) {