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 |
Boeing
BA
|
+$55.8M |
| 2 |
Microsoft
MSFT
|
+$42.2M |
| 3 |
Pinduoduo
PDD
|
+$41.3M |
| 4 |
Apple
AAPL
|
+$32M |
| 5 |
Direxion Daily Semiconductor Bull 3X ETF
SOXL
|
+$28.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Broadcom
AVGO
|
+$95.2M |
| 2 |
Citigroup
C
|
+$57.2M |
| 3 |
Pfizer
PFE
|
+$56.4M |
| 4 |
TSMC
TSM
|
+$39.7M |
| 5 |
Starbucks
SBUX
|
+$35.5M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.4% |
| 2 | Consumer Discretionary | 0.29% |
| 3 | Healthcare | 0.15% |
| 4 | Industrials | 0.13% |
| 5 | Financials | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1776
CALL
Albertsons Companies
ACI
$5.4B
| $3.53M | ﹤0.01% |
191,000
+152,600
| +397% | +$2.99M |
|
1777
Adobe
ADBE
$89.5B
| $3.53M | ﹤0.01% |
6,816
-935
| -12% | -$513K |
|
|
VTLE
1778
CALL
DELISTED
Vital Energy
VTLE
| $3.53M | ﹤0.01% |
131,200
+91,300
| +229% | +$3.38M |
|
1779
PUT
Return Stacked Bonds & Managed Futures ETF
RSBT
$137M
| $3.53M | ﹤0.01% |
209,200
+127,600
| +156% | +$2.31M |
|
1780
PUT
BridgeBio Pharma
BBIO
$16.5B
| $3.52M | ﹤0.01% |
138,400
-144,200
| -51% | -$3.79M |
|
|
ABK
1781
CALL
DELISTED
Ambac Financial Group
ABK
| $3.52M | ﹤0.01% |
314,300
+115,500
| +58% | +$1.29M |
|
1782
PUT
BJs Wholesale Club
BJ
$11.9B
| $3.52M | ﹤0.01% |
42,700
-42,400
| -50% | -$3.59M |
|
1783
CALL
BellRing Brands
BRBR
$1.51B
| $3.52M | ﹤0.01% |
58,000
+1,000
| +2% | +$55.5K |
|
1784
Cummins
CMI
$91.7B
| $3.52M | ﹤0.01% |
10,874
+6,489
| +148% | +$1.92M |
|
1785
CALL
HEICO Corp Class A
HEI.A
$35.4B
| $3.52M | ﹤0.01% |
13,500
+9,100
| +207% | +$1.73M |
|
1786
CALL
Calumet Specialty Products
CLMT
$3.63B
| $3.51M | ﹤0.01% |
197,000
+130,200
| +195% | +$2.09M |
|
1787
CALL
Rentokil
RTO
$14.3B
| $3.51M | ﹤0.01% |
140,800
+134,700
| +2,208% | +$3.99M |
|
1788
CALL
Trupanion
TRUP
$1.05B
| $3.5M | ﹤0.01% |
83,500
-34,600
| -29% | -$1.35M |
|
1789
CALL
Universal Health Services
UHS
$9.43B
| $3.5M | ﹤0.01% |
15,300
+11,600
| +314% | +$2.5M |
|
1790
PUT
Hawaiian Electric Industries
HE
$2.33B
| $3.5M | ﹤0.01% |
361,600
+261,000
| +259% | +$3.23M |
|
1791
PUT
InMode
INMD
$872M
| $3.5M | ﹤0.01% |
206,400
-6,200
| -3% | -$105K |
|
1792
CALL
CBRE Group
CBRE
$40.8B
| $3.5M | ﹤0.01% |
28,100
-4,100
| -13% | -$447K |
|
1793
CALL
Lemonade
LMND
$4.62B
| $3.5M | ﹤0.01% |
212,000
-71,500
| -25% | -$1.31M |
|
1794
PUT
Lithia Motors
LAD
$7.78B
| $3.49M | ﹤0.01% |
11,000
+900
| +9% | +$251K |
|
1795
CALL
Otis Worldwide
OTIS
$27.4B
| $3.49M | ﹤0.01% |
33,600
+16,700
| +99% | +$1.59M |
|
1796
PUT
Regions Financial
RF
$26.3B
| $3.49M | ﹤0.01% |
149,700
-40,200
| -21% | -$879K |
|
1797
Fair Isaac
FICO
$28.7B
| $3.48M | ﹤0.01% |
1,792
+658
| +58% | +$1.13M |
|
1798
PUT
Sprott Junior Uranium Miners ETF
URNJ
$306M
| $3.48M | ﹤0.01% |
77,600
+42,200
| +119% | +$884K |
|
1799
Alcoa
AA
$11.7B
| $3.48M | ﹤0.01% |
+90,177
| New | +$3.07M |
|
1800
CALL
Oscar Health
OSCR
$8.5B
| $3.47M | ﹤0.01% |
163,800
-28,900
| -15% | -$521K |
|
Similar funds
Simplex Trading's Q3 2024 Portfolio in Review
As of Q3 2024, Simplex Trading held 9,964 positions worth $170B, up 5.3% from $162B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading's Q3 2024 filing shows 1,185 new, 3,232 increased, 3,829 reduced and 1,476 closed positions. Its largest new stake was Boeing: 325,328 shares worth $49.5M. The largest sale was Broadcom, an estimated $95.2M.
By sector, the portfolio is most concentrated in Technology at 0.4% of assets, down from 0.53% a quarter earlier, followed by Consumer Discretionary and Healthcare.
- Simplex Trading's largest Q3 2024 buy was Boeing: 325,328 shares worth $49.5M.
- Simplex Trading added most to Pinduoduo in Q3 2024, an estimated $41.3M increase.
- Simplex Trading's biggest Q3 2024 reduction was Citigroup, cutting an estimated $57.2M.
- Simplex Trading fully exited Broadcom in Q3 2024, selling an estimated $95.2M.
- Simplex Trading's ten largest holdings make up 50% of its $170B portfolio in Q3 2024.
- Simplex Trading opened 1,185 new positions and closed 1,476 in Q3 2024.
- Simplex Trading's portfolio value rose 5.3% quarter-over-quarter to $170B.
Based on Simplex Trading's 13F filing for Q3 2024, filed 8 Nov 2024.