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 | |
|---|---|---|---|---|---|---|
4551
Global X MSCI Argentina ETF
ARGT
$837M
| $192K | ﹤0.01% |
2,324
+2,285
| +5,859% | +$177K |
|
4552
MarineMax
HZO
$748M
| $192K | ﹤0.01% |
6,644
-487
| -7% | -$15K |
|
4553
Lamar Advertising Co
LAMR
$16.7B
| $192K | ﹤0.01% |
+1,582
| New | +$207K |
|
|
MREO
4554
Mereo BioPharma
MREO
$48.9M
| $192K | ﹤0.01% |
55,099
+21,244
| +63% | +$83.5K |
|
4555
CALL
AbCellera Biologics
ABCL
$1.65B
| $191K | ﹤0.01% |
65,300
+57,400
| +727% | +$160K |
|
4556
PUT
Vita Coco
COCO
$3.86B
| $191K | ﹤0.01% |
5,200
+1,400
| +37% | +$46.6K |
|
4557
Gran Tierra Energy
GTE
$236M
| $191K | ﹤0.01% |
26,482
+20,211
| +322% | +$132K |
|
4558
CALL
Kodiak Gas Services
KGS
$5.55B
| $191K | ﹤0.01% |
4,700
+1,600
| +52% | +$57.9K |
|
|
LOMA
4559
Loma Negra
LOMA
$1.34B
| $191K | ﹤0.01% |
+16,014
| New | +$166K |
|
|
LX
4560
LexinFintech Holdings
LX
$246M
| $191K | ﹤0.01% |
33,002
+27,677
| +520% | +$116K |
|
|
TXNM
4561
CALL
TXNM Energy Inc
TXNM
$6.39B
| $191K | ﹤0.01% |
3,900
-3,000
| -43% | -$139K |
|
|
MTTR
4562
PUT
DELISTED
Matterport, Inc. Class A Common Stock
MTTR
| $191K | ﹤0.01% |
40,500
-200
| -0.5% | -$949 |
|
4563
Armstrong World Industries
AWI
$7.37B
| $190K | ﹤0.01% |
+1,351
| New | +$199K |
|
|
GRFS
4564
PUT
Grifois
GRFS
$5.55B
| $190K | ﹤0.01% |
25,600
-61,400
| -71% | -$513K |
|
4565
Amplify Cybersecurity ETF
HACK
$2.6B
| $190K | ﹤0.01% |
+2,551
| New | +$185K |
|
4566
PUT
Zevra Therapeutics
ZVRA
$578M
| $190K | ﹤0.01% |
22,800
+1,100
| +5% | +$9.39K |
|
|
DM
4567
CALL
DELISTED
Desktop Metal, Inc.
DM
| $190K | ﹤0.01% |
81,300
+4,900
| +6% | +$20.8K |
|
4568
ASE Group
ASX
$68.3B
| $189K | ﹤0.01% |
18,773
+2,667
| +17% | +$26.6K |
|
|
DRD
4569
DRDGold
DRD
$1.75B
| $189K | ﹤0.01% |
21,997
-5,795
| -21% | -$58.9K |
|
4570
Inter&Co
INTR
$2.39B
| $189K | ﹤0.01% |
44,846
+37,408
| +503% | +$210K |
|
4571
PUT
Omnicom Group
OMC
$23.5B
| $189K | ﹤0.01% |
2,200
-2,000
| -48% | -$198K |
|
|
WIMI
4572
CALL
WiMi Hologram Cloud
WIMI
$22.1M
| $189K | ﹤0.01% |
10,260
+7,650
| +293% | +$73.1K |
|
|
AGEN
4573
CALL
Agenus
AGEN
$276M
| $188K | ﹤0.01% |
310,200
+55,200
| +22% | +$204K |
|
|
FINV
4574
CALL
FinVolution Group
FINV
$1.17B
| $188K | ﹤0.01% |
27,800
-2,900
| -9% | -$18.7K |
|
|
HIVE
4575
PUT
HIVE Digital Technologies
HIVE
$679M
| $188K | ﹤0.01% |
66,200
+6,200
| +10% | +$23.2K |
|
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.