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 | |
|---|---|---|---|---|---|---|
2901
CALL
American Coastal Insurance
ACIC
$503M
| $1M | ﹤0.01% |
95,300
+11,600
| +14% | +$130K |
|
2902
PUT
Cardlytics
CDLX
$21.5M
| $1M | ﹤0.01% |
12,250
-4,770
| -28% | -$516K |
|
2903
PUT
Equity Residential
EQR
$25.4B
| $1M | ﹤0.01% |
14,500
-6,900
| -32% | -$449K |
|
2904
PUT
Fiverr
FVRR
$404M
| $1M | ﹤0.01% |
42,900
-49,800
| -54% | -$1.12M |
|
2905
PUT
LPL Financial
LPLA
$26.6B
| $1M | ﹤0.01% |
3,600
+1,300
| +57% | +$353K |
|
2906
PUT
Pilgrim's Pride
PPC
$6.98B
| $1M | ﹤0.01% |
26,100
-5,800
| -18% | -$209K |
|
2907
CALL
Robert Half
RHI
$3.98B
| $1M | ﹤0.01% |
15,700
+5,700
| +57% | +$391K |
|
|
REVG
2908
PUT
DELISTED
REV Group
REVG
| $1M | ﹤0.01% |
40,300
+40,100
| +20,050% | +$985K |
|
2909
Concentrix
CNXC
$1.48B
| $1M | ﹤0.01% |
15,846
-866
| -5% | -$52K |
|
2910
Madrigal Pharmaceuticals
MDGL
$12.8B
| $1M | ﹤0.01% |
3,572
+2,979
| +502% | +$709K |
|
|
AKRO
2911
CALL
DELISTED
Akero Therapeutics
AKRO
| $997K | ﹤0.01% |
42,500
-21,900
| -34% | -$468K |
|
2912
BJ's Restaurants
BJRI
$1.43B
| $997K | ﹤0.01% |
28,751
-8,602
| -23% | -$295K |
|
2913
CALL
Nordic American Tanker
NAT
$1.37B
| $995K | ﹤0.01% |
250,200
-240,300
| -49% | -$966K |
|
|
HIVE
2914
CALL
HIVE Digital Technologies
HIVE
$786M
| $994K | ﹤0.01% |
323,000
-118,600
| -27% | -$333K |
|
2915
PUT
Revolution Medicines
RVMD
$39.9B
| $993K | ﹤0.01% |
25,600
+19,300
| +306% | +$721K |
|
2916
Shake Shack
SHAK
$2.46B
| $993K | ﹤0.01% |
+11,035
| New | +$1.08M |
|
2917
CALL
SLM Corp
SLM
$4.74B
| $993K | ﹤0.01% |
47,800
-45,300
| -49% | -$954K |
|
2918
CALL
Inogen
INGN
$172M
| $992K | ﹤0.01% |
122,100
+91,900
| +304% | +$712K |
|
2919
Natural Resource Partners
NRP
$1.3B
| $991K | ﹤0.01% |
11,065
-10,272
| -48% | -$926K |
|
2920
CALL
Owens Corning
OC
$11.5B
| $990K | ﹤0.01% |
5,700
-2,000
| -26% | -$346K |
|
2921
PUT
Flex
FLEX
$40.7B
| $989K | ﹤0.01% |
36,500
-9,800
| -21% | -$293K |
|
2922
CALL
Macerich
MAC
$7.39B
| $988K | ﹤0.01% |
64,000
-326,000
| -84% | -$4.99M |
|
|
EXAS
2923
DELISTED
Exact Sciences
EXAS
| $987K | ﹤0.01% |
23,380
-94,488
| -80% | -$5.2M |
|
2924
PUT
Evolent Health
EVH
$445M
| $986K | ﹤0.01% |
51,600
+28,100
| +120% | +$718K |
|
2925
CALL
abrdn Physical Silver Shares ETF
SIVR
$4.08B
| $985K | ﹤0.01% |
35,400
-26,000
| -42% | -$716K |
|
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.