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 | |
|---|---|---|---|---|---|---|
2776
CALL
Inogen
INGN
$167M
| $1.18M | ﹤0.01% |
121,700
-400
| -0.3% | -$4.2K |
|
2777
PUT
Liquidia Corp
LQDA
$7.67B
| $1.18M | ﹤0.01% |
118,000
+22,800
| +24% | +$249K |
|
2778
PUT
Qorvo
QRVO
$7.63B
| $1.18M | ﹤0.01% |
11,400
-16,200
| -59% | -$1.82M |
|
|
CGC
2779
Canopy Growth
CGC
$375M
| $1.18M | ﹤0.01% |
+244,061
| New | +$1.48M |
|
2780
CALL
Marqeta
MQ
$1.8B
| $1.18M | ﹤0.01% |
59,775
+21,375
| +56% | +$447K |
|
2781
CALL
AGCO
AGCO
$8.78B
| $1.17M | ﹤0.01% |
12,000
+4,700
| +64% | +$438K |
|
2782
CALL
FT Vest Gold Strategy Target Income ETF
IGLD
$507M
| $1.17M | ﹤0.01% |
5,900
-10,500
| -64% | -$218K |
|
2783
CALL
Vontier
VNT
$4.33B
| $1.17M | ﹤0.01% |
34,800
+34,300
| +6,860% | +$1.22M |
|
2784
PUT
WEC Energy
WEC
$37.7B
| $1.17M | ﹤0.01% |
12,200
-8,000
| -40% | -$709K |
|
2785
PUT
Applied Optoelectronics
AAOI
$8.04B
| $1.17M | ﹤0.01% |
81,800
-27,000
| -25% | -$280K |
|
2786
CALL
Western Union
WU
$2.57B
| $1.17M | ﹤0.01% |
98,100
+40,600
| +71% | +$490K |
|
2787
CALL
BigBear.ai
BBAI
$1.32B
| $1.17M | ﹤0.01% |
800,500
+223,600
| +39% | +$330K |
|
2788
PUT
Marriott Vacations Worldwide
VAC
$3.24B
| $1.17M | ﹤0.01% |
15,900
+7,800
| +96% | +$602K |
|
2789
Restaurant Brands International
QSR
$25.1B
| $1.17M | ﹤0.01% |
16,155
+10,007
| +163% | +$703K |
|
2790
PUT
Birkenstock
BIRK
$7.47B
| $1.16M | ﹤0.01% |
23,600
+8,600
| +57% | +$468K |
|
2791
CALL
Outfront Media
OUT
$5.64B
| $1.16M | ﹤0.01% |
64,311
-25,298
| -28% | -$402K |
|
2792
PUT
NuScale Power
SMR
$2.8B
| $1.16M | ﹤0.01% |
100,500
-58,600
| -37% | -$598K |
|
2793
CALL
FB Financial Corp
FBK
$2.95B
| $1.16M | ﹤0.01% |
24,700
-4,400
| -15% | -$198K |
|
2794
PUT
Alliant Energy
LNT
$19.4B
| $1.16M | ﹤0.01% |
19,100
-26,400
| -58% | -$1.5M |
|
|
CNH
2795
PUT
CNH Industrial
CNH
$13.8B
| $1.16M | ﹤0.01% |
104,500
+8,500
| +9% | +$86.5K |
|
2796
CALL
Edison International
EIX
$30.7B
| $1.16M | ﹤0.01% |
13,300
+3,200
| +32% | +$260K |
|
2797
CALL
O-I Glass
OI
$1.39B
| $1.16M | ﹤0.01% |
88,300
+82,900
| +1,535% | +$993K |
|
|
SAGE
2798
CALL
DELISTED
Sage Therapeutics
SAGE
| $1.16M | ﹤0.01% |
160,400
+66,100
| +70% | +$605K |
|
|
GOEV
2799
CALL
DELISTED
Canoo Inc. Class A Common Stock
GOEV
| $1.16M | ﹤0.01% |
58,810
+12,380
| +27% | +$416K |
|
2800
PUT
Mohawk Industries
MHK
$6.9B
| $1.16M | ﹤0.01% |
7,200
-14,200
| -66% | -$2.04M |
|
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.