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 |
Apple
AAPL
|
+$552M |
| 2 |
Strategy Inc
MSTR
|
+$85.8M |
| 3 |
MSTX
Defiance Daily Target 2x Long MSTR ETF
MSTX
|
+$48.1M |
| 4 |
Intel
INTC
|
+$45.4M |
| 5 |
Uber
UBER
|
+$43M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$133M |
| 2 |
Pinduoduo
PDD
|
+$82.6M |
| 3 |
Boeing
BA
|
+$49.8M |
| 4 |
KraneShares CSI China Internet ETF
KWEB
|
+$45.1M |
| 5 |
Microsoft
MSFT
|
+$41M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.68% |
| 2 | Consumer Discretionary | 0.23% |
| 3 | Healthcare | 0.19% |
| 4 | Financials | 0.13% |
| 5 | Communication Services | 0.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2776
PUT
Dentsply Sirona
XRAY
$2.59B
| $1.06M | ﹤0.01% |
56,100
+14,000
| +33% | +$296K |
|
2777
CALL
Associated Banc-Corp
ASB
$5.81B
| $1.06M | ﹤0.01% |
44,500
+40,900
| +1,136% | +$1M |
|
|
NVMI
2778
PUT
Nova
NVMI
$13.9B
| $1.06M | ﹤0.01% |
+5,400
| New | +$1.04M |
|
|
FLNA
2779
PUT
Filana Therapeutics
FLNA
$43M
| $1.06M | ﹤0.01% |
450,800
+112,900
| +33% | +$1.98M |
|
2780
State Street
STT
$50.9B
| $1.06M | ﹤0.01% |
+10,835
| New | +$1.03M |
|
2781
Zimmer Biomet
ZBH
$17.7B
| $1.06M | ﹤0.01% |
10,059
+5,516
| +121% | +$592K |
|
2782
Camping World
CWH
$363M
| $1.06M | ﹤0.01% |
+50,376
| New | +$1.15M |
|
2783
PUT
Asana
ASAN
$1.58B
| $1.06M | ﹤0.01% |
52,300
-28,000
| -35% | -$443K |
|
2784
CALL
Redwire
RDW
$2.08B
| $1.06M | ﹤0.01% |
64,400
+38,400
| +148% | +$413K |
|
2785
PUT
Molson Coors Class B
TAP
$7.68B
| $1.06M | ﹤0.01% |
18,500
-24,300
| -57% | -$1.42M |
|
2786
CALL
Fortrea Holdings
FTRE
$1.85B
| $1.06M | ﹤0.01% |
56,700
+27,600
| +95% | +$538K |
|
2787
PUT
Argan
AGX
$7.98B
| $1.05M | ﹤0.01% |
7,700
+7,600
| +7,600% | +$1.04M |
|
2788
CALL
Coursera
COUR
$1.54B
| $1.05M | ﹤0.01% |
124,100
+18,500
| +18% | +$143K |
|
2789
CALL
Murphy USA
MUSA
$11.3B
| $1.05M | ﹤0.01% |
2,100
-3,400
| -62% | -$1.74M |
|
2790
CONMED
CNMD
$1.29B
| $1.05M | ﹤0.01% |
15,340
+12,061
| +368% | +$841K |
|
2791
New York Times
NYT
$11.6B
| $1.05M | ﹤0.01% |
+20,160
| New | +$1.1M |
|
2792
Vaxcyte
PCVX
$7.89B
| $1.05M | ﹤0.01% |
12,818
+12,485
| +3,749% | +$1.24M |
|
2793
CALL
Vipshop
VIPS
$6.84B
| $1.05M | ﹤0.01% |
77,900
-242,800
| -76% | -$3.49M |
|
2794
PUT
Delek US
DK
$3.87B
| $1.05M | ﹤0.01% |
56,700
+42,800
| +308% | +$767K |
|
2795
PUT
Evergy
EVRG
$20.1B
| $1.05M | ﹤0.01% |
17,000
-8,800
| -34% | -$544K |
|
|
TDAY
2796
USA Today Co
TDAY
$1.23B
| $1.05M | ﹤0.01% |
206,821
-23,046
| -10% | -$122K |
|
2797
PUT
PACS Group
PACS
$7.42B
| $1.05M | ﹤0.01% |
+79,800
| New | +$2.05M |
|
2798
Boston Properties
BXP
$11B
| $1.04M | ﹤0.01% |
14,059
-36,736
| -72% | -$2.98M |
|
2799
Freshpet
FRPT
$2.83B
| $1.04M | ﹤0.01% |
7,052
-1,597
| -18% | -$233K |
|
2800
PUT
Invesco Mortgage Capital
IVR
$776M
| $1.04M | ﹤0.01% |
129,800
-13,100
| -9% | -$110K |
|
Similar funds
Simplex Trading's Q4 2024 Portfolio in Review
As of Q4 2024, Simplex Trading held 10,008 positions worth $179B, up 4.8% from $170B the previous quarter. Its ten largest holdings account for 49% of the portfolio.
Simplex Trading's Q4 2024 filing shows 1,520 new, 3,222 increased, 3,616 reduced and 1,504 closed positions. Its largest new stake was Strategy Inc: 285,022 shares worth $82.5M. The largest sale was NVIDIA, an estimated $133M.
By sector, the portfolio is most concentrated in Technology at 0.68% of assets, up from 0.4% a quarter earlier, followed by Consumer Discretionary and Healthcare.
- Simplex Trading's largest Q4 2024 buy was Strategy Inc: 285,022 shares worth $82.5M.
- Simplex Trading added most to Apple in Q4 2024, an estimated $552M increase.
- Simplex Trading's biggest Q4 2024 reduction was NVIDIA, cutting an estimated $133M.
- Simplex Trading fully exited Pinduoduo in Q4 2024, selling an estimated $82.6M.
- Simplex Trading's ten largest holdings make up 49% of its $179B portfolio in Q4 2024.
- Simplex Trading opened 1,520 new positions and closed 1,504 in Q4 2024.
- Simplex Trading's portfolio value rose 4.8% quarter-over-quarter to $179B.
Based on Simplex Trading's 13F filing for Q4 2024, filed 11 Feb 2025.