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 | |
|---|---|---|---|---|---|---|
3451
CALL
CorMedix
CRMD
$596M
| $574K | ﹤0.01% |
71,100
+51,600
| +265% | +$279K |
|
3452
Ultragenyx Pharmaceutical
RARE
$2.65B
| $574K | ﹤0.01% |
10,347
+5,512
| +114% | +$281K |
|
3453
PUT
Annovis Bio
ANVS
$71M
| $573K | ﹤0.01% |
71,200
+47,900
| +206% | +$449K |
|
3454
PUT
Lindsay Corp
LNN
$1.17B
| $573K | ﹤0.01% |
4,600
+3,300
| +254% | +$396K |
|
3455
PUT
Manulife Financial
MFC
$73.2B
| $573K | ﹤0.01% |
19,400
+5,900
| +44% | +$158K |
|
3456
CALL
HUB Group
HUBG
$2.93B
| $572K | ﹤0.01% |
12,600
-20,200
| -62% | -$895K |
|
3457
American Superconductor
AMSC
$1.48B
| $571K | ﹤0.01% |
24,195
-7,826
| -24% | -$180K |
|
3458
PUT
Crescent Energy
CRGY
$3.46B
| $570K | ﹤0.01% |
52,100
-72,300
| -58% | -$826K |
|
3459
CALL
Imperial Petroleum
IMPP
$217M
| $570K | ﹤0.01% |
137,400
-292,400
| -68% | -$1.16M |
|
3460
CALL
Agios Pharmaceuticals
AGIO
$2.2B
| $568K | ﹤0.01% |
12,800
-7,100
| -36% | -$322K |
|
3461
CALL
Progyny
PGNY
$2.47B
| $568K | ﹤0.01% |
33,900
+9,300
| +38% | +$223K |
|
|
INFN
3462
CALL
DELISTED
Infinera Corporation Common Stock
INFN
| $568K | ﹤0.01% |
84,200
-500
| -0.6% | -$3.08K |
|
|
MOMO
3463
PUT
Hello Group
MOMO
$869M
| $567K | ﹤0.01% |
74,600
-39,300
| -35% | -$260K |
|
3464
CALL
Piper Sandler
PIPR
$5.15B
| $567K | ﹤0.01% |
8,000
+7,200
| +900% | +$471K |
|
3465
CALL
NextNav
NN
$1.73B
| $566K | ﹤0.01% |
75,600
+24,700
| +49% | +$191K |
|
3466
Travere Therapeutics
TVTX
$5.27B
| $566K | ﹤0.01% |
40,461
-40,528
| -50% | -$422K |
|
3467
PUT
Range Resources
RRC
$8.85B
| $565K | ﹤0.01% |
18,400
-5,000
| -21% | -$155K |
|
3468
Ambarella
AMBA
$2.99B
| $564K | ﹤0.01% |
+10,011
| New | +$533K |
|
3469
Amplify Alternative Harvest ETF
MJ
$101M
| $564K | ﹤0.01% |
14,217
+3,612
| +34% | +$147K |
|
3470
Braze
BRZE
$2.65B
| $563K | ﹤0.01% |
17,434
+8,274
| +90% | +$327K |
|
3471
Robert Half
RHI
$4.07B
| $563K | ﹤0.01% |
+8,357
| New | +$529K |
|
3472
PUT
First Trust Consumer Discretionary AlphaDEX Fund
FXD
$269M
| $562K | ﹤0.01% |
9,500
+3,300
| +53% | +$199K |
|
3473
PUT
LendingTree
TREE
$564M
| $562K | ﹤0.01% |
9,700
+200
| +2% | +$10.3K |
|
3474
Dutch Bros
BROS
$9.01B
| $561K | ﹤0.01% |
+17,525
| New | +$618K |
|
3475
CALL
TechnipFMC
FTI
$29.9B
| $561K | ﹤0.01% |
21,400
-84,400
| -80% | -$2.24M |
|
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.