Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$93M |
| 2 |
Citigroup
C
|
+$74.8M |
| 3 |
Pinduoduo
PDD
|
+$50.7M |
| 4 |
Intel
INTC
|
+$47.1M |
| 5 |
Broadcom
AVGO
|
+$46.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$94.5M |
| 2 |
Pfizer
PFE
|
+$66.4M |
| 3 |
Boeing
BA
|
+$61.6M |
| 4 |
PayPal
PYPL
|
+$42.2M |
| 5 |
GE Aerospace
GE
|
+$42M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 98.27% |
| 2 | Technology | 0.53% |
| 3 | Consumer Discretionary | 0.29% |
| 4 | Healthcare | 0.21% |
| 5 | Financials | 0.2% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1201
CALL
BioNTech
BNTX
$26.1B
| $7.43M | ﹤0.01% |
92,500
-33,200
| -26% | -$3.03M |
|
1202
GraniteShares ETF Trust GraniteShares 2x Long NVDA Daily ETF
NVDL
$4.12B
| $7.42M | ﹤0.01% |
320,298
+290,481
| +974% | +$4.87M |
|
1203
PUT
Virgin Galactic
SPCE
$461M
| $7.37M | ﹤0.01% |
874,200
+834,155
| +2,083% | +$15.1M |
|
1204
PUT
Pan American Silver
PAAS
$21.3B
| $7.35M | ﹤0.01% |
370,200
+74,300
| +25% | +$1.46M |
|
1205
PUT
Dropbox
DBX
$7.57B
| $7.35M | ﹤0.01% |
327,200
-23,600
| -7% | -$539K |
|
1206
CALL
Scotiabank
BNS
$114B
| $7.35M | ﹤0.01% |
160,700
+46,200
| +40% | +$2.19M |
|
1207
Warner Bros
WBD
$70.8B
| $7.35M | ﹤0.01% |
987,527
-236,320
| -19% | -$1.89M |
|
1208
CALL
Boston Properties
BXP
$10.8B
| $7.33M | ﹤0.01% |
119,000
+29,800
| +33% | +$1.82M |
|
1209
CALL
Plains All American Pipeline
PAA
$18.1B
| $7.32M | ﹤0.01% |
410,100
+241,400
| +143% | +$4.21M |
|
1210
CALL
The GEO Group
GEO
$4.18B
| $7.32M | ﹤0.01% |
509,900
-54,300
| -10% | -$767K |
|
1211
Micron Technology
MU
$1.15T
| $7.32M | ﹤0.01% |
55,662
-236,834
| -81% | -$29.8M |
|
1212
CALL
International Flavors & Fragrances
IFF
$22B
| $7.29M | ﹤0.01% |
76,600
-16,600
| -18% | -$1.52M |
|
1213
PUT
GSK
GSK
$100B
| $7.29M | ﹤0.01% |
189,300
-26,800
| -12% | -$1.13M |
|
1214
CALL
argenx
ARGX
$64.6B
| $7.27M | ﹤0.01% |
16,900
+2,900
| +21% | +$1.11M |
|
1215
CALL
TKO Group
TKO
$13.6B
| $7.27M | ﹤0.01% |
67,300
-67,600
| -50% | -$6.86M |
|
1216
PUT
JetBlue
JBLU
$1.75B
| $7.27M | ﹤0.01% |
1,193,200
-929,500
| -44% | -$5.6M |
|
1217
CALL
Barclays
BCS
$90.6B
| $7.25M | ﹤0.01% |
676,900
+188,500
| +39% | +$1.96M |
|
1218
CALL
Novavax
NVAX
$1.69B
| $7.22M | ﹤0.01% |
570,700
-81,700
| -13% | -$822K |
|
|
DENT
1219
CALL
DELISTED
AdvisorShares Dent Tactical ETF
DENT
| $7.21M | ﹤0.01% |
1,045,400
-688,900
| -40% | -$4.75M |
|
1220
PUT
Lattice Semiconductor
LSCC
$16.5B
| $7.21M | ﹤0.01% |
124,400
+31,300
| +34% | +$2.16M |
|
1221
CALL
Diageo
DEO
$49.6B
| $7.19M | ﹤0.01% |
57,000
-13,100
| -19% | -$1.8M |
|
|
K
1222
PUT
DELISTED
Kellanova
K
| $7.17M | ﹤0.01% |
141,600
+11,700
| +9% | +$690K |
|
1223
CALL
The Mosaic Company
MOS
$8.22B
| $7.16M | ﹤0.01% |
247,800
-119,700
| -33% | -$3.61M |
|
1224
PUT
BridgeBio Pharma
BBIO
$14.6B
| $7.16M | ﹤0.01% |
282,600
+75,200
| +36% | +$2.06M |
|
1225
CALL
Enbridge
ENB
$109B
| $7.16M | ﹤0.01% |
201,100
-16,000
| -7% | -$572K |
|
Similar funds
Simplex Trading's Q2 2024 Portfolio in Review
As of Q2 2024, Simplex Trading held 10,213 positions worth $162B, down 6.5% from $173B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading's Q2 2024 filing shows 1,358 new, 3,196 increased, 4,061 reduced and 1,431 closed positions. Its largest new stake was Citigroup: 1,213,247 shares worth $77M. The largest sale was State Street Energy Select Sector SPDR ETF, an estimated $94.5M.
By sector, the portfolio is most concentrated in Miscellaneous at 98% of assets, down from 98% a quarter earlier, followed by Technology and Consumer Discretionary.
- Simplex Trading's largest Q2 2024 buy was Citigroup: 1,213,247 shares worth $77M.
- Simplex Trading added most to NVIDIA in Q2 2024, an estimated $93M increase.
- Simplex Trading's biggest Q2 2024 reduction was State Street Energy Select Sector SPDR ETF, cutting an estimated $94.5M.
- Simplex Trading fully exited Boeing in Q2 2024, selling an estimated $61.6M.
- Simplex Trading's ten largest holdings make up 50% of its $162B portfolio in Q2 2024.
- Simplex Trading opened 1,358 new positions and closed 1,431 in Q2 2024.
- Simplex Trading's portfolio value fell 6.5% quarter-over-quarter to $162B.
Based on Simplex Trading's 13F filing for Q2 2024, filed 25 Jul 2024.