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 |
NVIDIA
NVDA
|
+$93M |
| 2 |
Citigroup
C
|
+$74.8M |
| 3 |
Pinduoduo
PDD
|
+$50.7M |
| 4 |
Intel
INTC
|
+$47.1M |
| 5 |
Broadcom
AVGO
|
+$46.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$94.5M |
| 2 |
Pfizer
PFE
|
+$66.4M |
| 3 |
Boeing
BA
|
+$61.6M |
| 4 |
PayPal
PYPL
|
+$42.2M |
| 5 |
GE Aerospace
GE
|
+$42M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.53% |
| 2 | Consumer Discretionary | 0.29% |
| 3 | Healthcare | 0.21% |
| 4 | Financials | 0.2% |
| 5 | Materials | 0.12% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
4501
PUT
MarineMax
HZO
$748M
| $236K | ﹤0.01% |
7,300
-1,100
| -13% | -$32.2K |
|
4502
PUT
KLX Energy Services
KLXE
$43.1M
| $236K | ﹤0.01% |
47,800
+23,000
| +93% | +$138K |
|
4503
Pinnacle West Capital
PNW
$12.4B
| $236K | ﹤0.01% |
+3,100
| New | +$234K |
|
|
TGNA
4504
DELISTED
TEGNA Inc
TGNA
| $236K | ﹤0.01% |
+16,999
| New | +$240K |
|
4505
PUT
Thomson Reuters
TRI
$46.4B
| $235K | ﹤0.01% |
+1,378
| New | +$228K |
|
4506
CALL
Walker & Dunlop
WD
$1.73B
| $235K | ﹤0.01% |
2,400
-2,500
| -51% | -$238K |
|
4507
FTI Consulting
FCN
$5.14B
| $234K | ﹤0.01% |
1,089
-2,927
| -73% | -$626K |
|
4508
PUT
Kamada
KMDA
$404M
| $234K | ﹤0.01% |
46,800
-18,400
| -28% | -$97K |
|
4509
Arcos Dorados Holdings
ARCO
$1.74B
| $233K | ﹤0.01% |
25,960
+14,462
| +126% | +$149K |
|
4510
Gaotu Techedu
GOTU
$405M
| $233K | ﹤0.01% |
47,695
-22,912
| -32% | -$144K |
|
4511
PUT
Hess Midstream
HESM
$5.19B
| $233K | ﹤0.01% |
6,400
-24,700
| -79% | -$872K |
|
4512
CALL
Gibraltar Industries
ROCK
$1.28B
| $233K | ﹤0.01% |
3,400
-1,100
| -24% | -$80.1K |
|
4513
PUT
Zumiez
ZUMZ
$330M
| $233K | ﹤0.01% |
12,000
+11,700
| +3,900% | +$203K |
|
4514
CALL
GrowGeneration
GRWG
$84.7M
| $232K | ﹤0.01% |
108,200
+59,800
| +124% | +$152K |
|
4515
CALL
Interparfums
IPAR
$4.07B
| $232K | ﹤0.01% |
2,000
+400
| +25% | +$48.6K |
|
4516
Kirby Corp
KEX
$7.01B
| $232K | ﹤0.01% |
+1,938
| New | +$216K |
|
4517
MannKind Corp
MNKD
$1.19B
| $232K | ﹤0.01% |
44,503
+19,630
| +79% | +$89.1K |
|
4518
CALL
Vanguard FTSE Developed Markets ETF
VEA
$223B
| $232K | ﹤0.01% |
4,700
-12,300
| -72% | -$612K |
|
4519
CALL
Warner Music
WMG
$15.2B
| $232K | ﹤0.01% |
7,600
-15,800
| -68% | -$507K |
|
4520
CALL
Avnet
AVT
$6.86B
| $231K | ﹤0.01% |
4,500
+4,000
| +800% | +$205K |
|
4521
CALL
B2Gold
BTG
$4.98B
| $231K | ﹤0.01% |
85,900
+40,100
| +88% | +$108K |
|
4522
CALL
Delcath Systems
DCTH
$400M
| $231K | ﹤0.01% |
27,600
-9,400
| -25% | -$59.6K |
|
4523
CALL
Coca-Cola Femsa
KOF
$22.5B
| $231K | ﹤0.01% |
2,700
+1,200
| +80% | +$112K |
|
4524
PUT
Oceaneering
OII
$4.64B
| $231K | ﹤0.01% |
9,800
-600
| -6% | -$13.9K |
|
|
PNNT
4525
CALL
Pennant Park Investment Corp
PNNT
$220M
| $231K | ﹤0.01% |
+30,600
| New | +$222K |
|
Similar funds
Simplex Trading's Q2 2024 Portfolio in Review
As of Q2 2024, Simplex Trading held 10,213 positions worth $162B, down 6.5% from $173B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading withdrew a net $19.2B in Q2 2024, closing 1,431 positions and reducing 4,061 holdings. Its most notable exit was Boeing, an estimated $61.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.53% of assets, up from 0.38% a quarter earlier, followed by Consumer Discretionary and Healthcare.
Against the trend, Simplex Trading opened a new position in Citigroup worth $77M.
- Simplex Trading's largest Q2 2024 buy was Citigroup: 1,213,247 shares worth $77M.
- Simplex Trading added most to NVIDIA in Q2 2024, an estimated $93M increase.
- Simplex Trading's biggest Q2 2024 reduction was State Street Energy Select Sector SPDR ETF, cutting an estimated $94.5M.
- Simplex Trading fully exited Boeing in Q2 2024, selling an estimated $61.6M.
- Simplex Trading's ten largest holdings make up 50% of its $162B portfolio in Q2 2024.
- Simplex Trading opened 1,358 new positions and closed 1,431 in Q2 2024.
- Simplex Trading's portfolio value fell 6.5% quarter-over-quarter to $162B.
Based on Simplex Trading's 13F filing for Q2 2024, filed 25 Jul 2024.