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 |
Pfizer
PFE
|
+$89.5M |
| 2 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$85.5M |
| 3 |
Boeing
BA
|
+$71M |
| 4 |
Intel
INTC
|
+$60.7M |
| 5 |
Meta Platforms (Facebook)
META
|
+$48.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$117M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$104M |
| 3 |
Alibaba
BABA
|
+$82.8M |
| 4 |
Walt Disney
DIS
|
+$68.5M |
| 5 |
Citigroup
C
|
+$59.8M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.38% |
| 2 | Healthcare | 0.27% |
| 3 | Consumer Discretionary | 0.25% |
| 4 | Industrials | 0.17% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
801
PUT
Tractor Supply
TSCO
$15.9B
| $16.8M | 0.01% |
321,500
+42,000
| +15% | +$2.01M |
|
|
IPFF
802
PUT
DELISTED
iShares International Preferred Stock ETF
IPFF
| $16.8M | 0.01% |
360,500
+200,800
| +126% | +$9.34M |
|
803
Carnival Corporation Ltd
CCL
$34.6B
| $16.8M | 0.01% |
+1,025,542
| New | +$16.7M |
|
804
CALL
Aflac
AFL
$63.3B
| $16.7M | 0.01% |
194,400
+59,300
| +44% | +$4.86M |
|
805
UnitedHealth
UNH
$385B
| $16.7M | 0.01% |
+33,725
| New | +$17.1M |
|
806
CALL
Mondelez International
MDLZ
$77.1B
| $16.6M | 0.01% |
237,700
+7,400
| +3% | +$540K |
|
807
PUT
Colgate-Palmolive
CL
$72.1B
| $16.6M | 0.01% |
184,600
+67,700
| +58% | +$5.74M |
|
808
CALL
WIX.com
WIX
$2.04B
| $16.6M | 0.01% |
120,900
+8,600
| +8% | +$1.13M |
|
809
PUT
Agilent Technologies
A
$39.5B
| $16.6M | 0.01% |
114,200
+8,000
| +8% | +$1.1M |
|
810
CALL
Builders FirstSource
BLDR
$7.59B
| $16.6M | 0.01% |
79,600
-69,900
| -47% | -$12.9M |
|
|
DENT
811
CALL
DELISTED
AdvisorShares Dent Tactical ETF
DENT
| $16.6M | 0.01% |
1,734,300
+591,400
| +52% | +$5.65M |
|
812
PUT
American International
AIG
$41.4B
| $16.5M | 0.01% |
211,200
-92,000
| -30% | -$6.57M |
|
813
PUT
Invesco S&P SmallCap Low Volatility ETF
XSLV
$246M
| $16.5M | 0.01% |
531,200
+97,800
| +23% | +$4.23M |
|
814
PUT
AB InBev
BUD
$155B
| $16.5M | 0.01% |
271,500
+35,100
| +15% | +$2.2M |
|
815
PUT
Ally Financial
ALLY
$13.4B
| $16.5M | 0.01% |
405,500
-475,700
| -54% | -$17.4M |
|
816
PUT
KKR & Co
KKR
$86.2B
| $16.5M | 0.01% |
163,600
+48,400
| +42% | +$4.45M |
|
817
CALL
Darden Restaurants
DRI
$22.2B
| $16.4M | 0.01% |
98,100
-9,200
| -9% | -$1.53M |
|
818
CALL
Western Alliance Bancorporation
WAL
$9.06B
| $16.4M | 0.01% |
255,400
+36,200
| +17% | +$2.22M |
|
819
PUT
Clorox
CLX
$11.3B
| $16.3M | 0.01% |
106,700
-88,300
| -45% | -$13.2M |
|
820
CALL
GraniteShares Bloomberg Commodity Broad Strategy No K-1 ETF
COMB
$136M
| $16.3M | 0.01% |
392,500
+374,100
| +2,033% | +$7.25M |
|
821
PUT
PG&E
PCG
$38.6B
| $16.3M | 0.01% |
969,800
+383,200
| +65% | +$6.42M |
|
822
CALL
Southern Company
SO
$109B
| $16.2M | 0.01% |
226,300
-161,000
| -42% | -$11.1M |
|
823
PUT
PBF Energy
PBF
$7.33B
| $16.2M | 0.01% |
281,500
-75,900
| -21% | -$3.72M |
|
|
TYNS
824
PUT
DELISTED
Direxion Daily 7-10 Year Treasury Bear 1X Shares
TYNS
| $16.2M | 0.01% |
143,600
-15,000
| -9% | -$1.69M |
|
825
PUT
OneMain Financial
OMF
$6.79B
| $16.2M | 0.01% |
316,800
+188,600
| +147% | +$9.01M |
|
Similar funds
Simplex Trading's Q1 2024 Portfolio in Review
As of Q1 2024, Simplex Trading held 10,366 positions worth $173B, up 11% from $156B the previous quarter. Its ten largest holdings account for 47% of the portfolio.
Simplex Trading's Q1 2024 filing shows 1,549 new, 3,675 increased, 3,484 reduced and 1,506 closed positions. Its largest new stake was Boeing: 345,653 shares worth $66.7M. The largest sale was NVIDIA, an estimated $117M.
By sector, the portfolio is most concentrated in Technology at 0.38% of assets, up from 0.33% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2024 buy was Boeing: 345,653 shares worth $66.7M.
- Simplex Trading added most to Pfizer in Q1 2024, an estimated $89.5M increase.
- Simplex Trading's biggest Q1 2024 reduction was NVIDIA, cutting an estimated $117M.
- Simplex Trading fully exited Citigroup in Q1 2024, selling an estimated $59.8M.
- Simplex Trading's ten largest holdings make up 47% of its $173B portfolio in Q1 2024.
- Simplex Trading opened 1,549 new positions and closed 1,506 in Q1 2024.
- Simplex Trading's portfolio value rose 11% quarter-over-quarter to $173B.
Based on Simplex Trading's 13F filing for Q1 2024, filed 25 Apr 2024.