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 | Technology | 0.53% |
| 2 | Consumer Discretionary | 0.29% |
| 3 | Healthcare | 0.21% |
| 4 | Financials | 0.2% |
| 5 | Materials | 0.12% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
676
PUT
Five Below
FIVE
$11.3B
| $17.8M | 0.01% |
163,000
+16,500
| +11% | +$2.28M |
|
677
Carnival Corporation Ltd
CCL
$34.8B
| $17.8M | 0.01% |
948,317
-77,225
| -8% | -$1.19M |
|
678
PUT
S&P Global
SPGI
$125B
| $17.8M | 0.01% |
39,800
-1,900
| -5% | -$815K |
|
679
CALL
American Tower
AMT
$78.1B
| $17.7M | 0.01% |
91,300
-358,900
| -80% | -$67.1M |
|
680
CALL
Peabody Energy
BTU
$2.94B
| $17.7M | 0.01% |
802,200
+265,000
| +49% | +$6.12M |
|
|
CMA
681
CALL
DELISTED
Comerica
CMA
| $17.7M | 0.01% |
347,300
+60,700
| +21% | +$3.1M |
|
682
PUT
AstraZeneca
AZN
$261B
| $17.6M | 0.01% |
112,850
-57,450
| -34% | -$8.64M |
|
683
PUT
Truist Financial
TFC
$62.1B
| $17.5M | 0.01% |
451,600
-145,600
| -24% | -$5.5M |
|
684
PUT
Phillips 66
PSX
$85.5B
| $17.5M | 0.01% |
124,200
-94,600
| -43% | -$14M |
|
685
Celsius Holdings
CELH
$7.17B
| $17.5M | 0.01% |
+306,850
| New | +$23.2M |
|
686
PUT
Equinix
EQIX
$103B
| $17.5M | 0.01% |
23,100
-1,800
| -7% | -$1.37M |
|
687
Target
TGT
$61.3B
| $17.4M | 0.01% |
117,544
+111,854
| +1,966% | +$17.6M |
|
688
CALL
Edwards Lifesciences
EW
$48.4B
| $17.3M | 0.01% |
187,800
+4,800
| +3% | +$425K |
|
689
CALL
Crocs
CROX
$6.65B
| $17.3M | 0.01% |
118,500
-60,600
| -34% | -$8.5M |
|
690
PUT
Cleveland-Cliffs
CLF
$6.35B
| $17.2M | 0.01% |
1,119,300
-341,500
| -23% | -$6.12M |
|
691
CALL
Emerson Electric
EMR
$80.6B
| $17.2M | 0.01% |
156,300
-57,400
| -27% | -$6.35M |
|
692
Fortinet
FTNT
$112B
| $17.2M | 0.01% |
285,618
+152,362
| +114% | +$9.47M |
|
693
PUT
Ally Financial
ALLY
$13.3B
| $17.2M | 0.01% |
433,700
+28,200
| +7% | +$1.1M |
|
694
CALL
Match Group
MTCH
$8.64B
| $17.2M | 0.01% |
566,300
-185,800
| -25% | -$5.87M |
|
695
Advanced Micro Devices
AMD
$890B
| $17.2M | 0.01% |
106,023
-137,241
| -56% | -$22.1M |
|
696
iShares Silver Trust
SLV
$27.9B
| $17.2M | 0.01% |
646,240
-822,887
| -56% | -$21.6M |
|
697
CALL
MetLife
MET
$59.4B
| $17.2M | 0.01% |
244,600
-31,400
| -11% | -$2.24M |
|
698
CALL
BCE
BCE
$19.8B
| $17.1M | 0.01% |
529,000
+268,100
| +103% | +$8.94M |
|
699
CALL
Abercrombie & Fitch
ANF
$4.1B
| $17M | 0.01% |
95,700
-63,100
| -40% | -$9.15M |
|
700
PUT
Simon Property Group
SPG
$73.8B
| $17M | 0.01% |
112,100
-67,000
| -37% | -$9.87M |
|
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 withdrew a net $19.2B in Q2 2024, closing 1,431 positions and reducing 4,061 holdings. Its most notable exit was Boeing, an estimated $61.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.53% of assets, up from 0.38% a quarter earlier, followed by Consumer Discretionary and Healthcare.
Against the trend, Simplex Trading opened a new position in Citigroup worth $77M.
- 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.