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 | |
|---|---|---|---|---|---|---|
|
MDRX
1751
PUT
DELISTED
Veradigm Inc. Common Stock
MDRX
| $4.12M | ﹤0.01% |
535,000
+342,600
| +178% | +$3.11M |
|
1752
PUT
Rexford Industrial Realty
REXR
$8.7B
| $4.11M | ﹤0.01% |
81,800
+78,200
| +2,172% | +$4.14M |
|
1753
PUT
Cognizant
CTSH
$21.5B
| $4.11M | ﹤0.01% |
56,100
-5,600
| -9% | -$428K |
|
1754
Avis
CAR
$5.63B
| $4.11M | ﹤0.01% |
+33,559
| New | +$4.63M |
|
1755
PUT
Hyatt Hotels
H
$17.6B
| $4.1M | ﹤0.01% |
25,700
+8,200
| +47% | +$1.15M |
|
1756
CALL
OneMain Financial
OMF
$6.9B
| $4.1M | ﹤0.01% |
80,300
-23,900
| -23% | -$1.14M |
|
1757
PUT
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
$162M
| $4.1M | ﹤0.01% |
79,050
-138,925
| -64% | -$7.96M |
|
|
PXD
1758
PUT
DELISTED
Pioneer Natural Resource Co.
PXD
| $4.09M | ﹤0.01% |
15,600
-25,900
| -62% | -$6.07M |
|
1759
Costco
COST
$415B
| $4.09M | ﹤0.01% |
+5,589
| New | +$3.99M |
|
1760
PUT
Goodyear
GT
$2.07B
| $4.08M | ﹤0.01% |
297,100
-339,500
| -53% | -$4.44M |
|
1761
CALL
Nasdaq
NDAQ
$51.5B
| $4.07M | ﹤0.01% |
64,500
-55,300
| -46% | -$3.2M |
|
1762
CALL
Sherwin-Williams
SHW
$78.3B
| $4.06M | ﹤0.01% |
11,700
-49,000
| -81% | -$15.6M |
|
1763
PUT
SoundHound AI
SOUN
$2.68B
| $4.06M | ﹤0.01% |
689,800
+439,000
| +175% | +$1.74M |
|
|
FUSN
1764
CALL
DELISTED
Fusion Pharmaceuticals Inc. Common Shares
FUSN
| $4.06M | ﹤0.01% |
190,300
+177,600
| +1,398% | +$2.12M |
|
1765
PUT
First Majestic Silver
AG
$8.05B
| $4.05M | ﹤0.01% |
689,600
+106,400
| +18% | +$533K |
|
1766
Peloton Interactive
PTON
$2.63B
| $4.05M | ﹤0.01% |
+944,287
| New | +$4.66M |
|
1767
PUT
Cullen/Frost Bankers
CFR
$10.3B
| $4.04M | ﹤0.01% |
35,900
+23,700
| +194% | +$2.53M |
|
1768
PepsiCo
PEP
$186B
| $4.04M | ﹤0.01% |
23,084
-57,060
| -71% | -$9.61M |
|
|
APLS
1769
PUT
DELISTED
Apellis Pharmaceuticals
APLS
| $4.04M | ﹤0.01% |
68,700
-48,100
| -41% | -$3.07M |
|
1770
CALL
Yeti Holdings
YETI
$3.82B
| $4.04M | ﹤0.01% |
104,700
+20,200
| +24% | +$854K |
|
1771
CALL
Vermilion Energy
VET
$1.73B
| $4.04M | ﹤0.01% |
324,400
+96,600
| +42% | +$1.08M |
|
1772
Sunrun
RUN
$2.37B
| $4.03M | ﹤0.01% |
+306,114
| New | +$4.21M |
|
1773
PUT
Archer Aviation
ACHR
$3.64B
| $4.03M | ﹤0.01% |
873,100
+633,300
| +264% | +$3.18M |
|
1774
CALL
Fomento Económico Mexicano
FMX
$43.3B
| $4.03M | ﹤0.01% |
30,900
+5,500
| +22% | +$718K |
|
|
QLTB
1775
CALL
DELISTED
ISHARES BAA BA RATED CORP BOND FUND
QLTB
| $4.03M | ﹤0.01% |
45,600
+23,800
| +109% | +$2.1M |
|
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.