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 | |
|---|---|---|---|---|---|---|
3326
Melco Resorts & Entertainment
MLCO
$2.18B
| $683K | ﹤0.01% |
91,625
-15,691
| -15% | -$118K |
|
3327
Perion Network
PERI
$371M
| $683K | ﹤0.01% |
81,909
-2,126
| -3% | -$25.8K |
|
3328
CALL
Shoals Technologies Group
SHLS
$1.57B
| $683K | ﹤0.01% |
109,500
+17,400
| +19% | +$139K |
|
3329
PUT
Natera
NTRA
$37B
| $682K | ﹤0.01% |
6,300
-20,000
| -76% | -$2.03M |
|
|
PMT
3330
CALL
PennyMac Mortgage Investment
PMT
$839M
| $682K | ﹤0.01% |
49,600
+33,300
| +204% | +$467K |
|
3331
PUT
XPEL
XPEL
$1.18B
| $682K | ﹤0.01% |
19,200
+1,600
| +9% | +$69K |
|
3332
PUT
PennyMac Financial
PFSI
$4.39B
| $681K | ﹤0.01% |
7,200
-20,000
| -74% | -$1.81M |
|
3333
CALL
Talos Energy
TALO
$2.36B
| $681K | ﹤0.01% |
56,100
-134,200
| -71% | -$1.67M |
|
3334
CALL
Clover Health Investments
CLOV
$2.25B
| $680K | ﹤0.01% |
553,600
+73,700
| +15% | +$66.1K |
|
3335
PUT
NETGEAR
NTGR
$681M
| $680K | ﹤0.01% |
44,500
+11,400
| +34% | +$159K |
|
3336
Iovance Biotherapeutics
IOVA
$2.19B
| $679K | ﹤0.01% |
84,722
+51,527
| +155% | +$552K |
|
3337
ProShares Ultra Bloomberg Crude Oil
UCO
$414M
| $679K | ﹤0.01% |
20,287
+13,602
| +203% | +$441K |
|
3338
CALL
Workiva
WK
$3.13B
| $678K | ﹤0.01% |
9,300
+900
| +11% | +$70.8K |
|
3339
PUT
Huntsman Corp
HUN
$2.06B
| $676K | ﹤0.01% |
29,700
+20,700
| +230% | +$504K |
|
|
KEEL
3340
PUT
Keel Infrastructure Corp
KEEL
$2.45B
| $675K | ﹤0.01% |
263,000
-800
| -0.3% | -$1.72K |
|
3341
PUT
Kontoor Brands
KTB
$4.74B
| $674K | ﹤0.01% |
10,200
+8,700
| +580% | +$569K |
|
3342
CALL
Sterling Infrastructure
STRL
$19.5B
| $674K | ﹤0.01% |
5,700
-4,500
| -44% | -$513K |
|
3343
Revolution Medicines
RVMD
$40B
| $673K | ﹤0.01% |
17,344
+7,695
| +80% | +$288K |
|
3344
PUT
Xenon Pharmaceuticals
XENE
$6.36B
| $670K | ﹤0.01% |
17,200
| – | – |
|
3345
PUT
Simplify US Equity PLUS Convexity ETF
SPYC
$111M
| $669K | ﹤0.01% |
30,000
-93,500
| -76% | -$3.24M |
|
3346
CALL
XP
XP
$8.65B
| $668K | ﹤0.01% |
38,000
-530,200
| -93% | -$11M |
|
3347
Designer Brands
DBI
$298M
| $667K | ﹤0.01% |
97,739
+96,873
| +11,186% | +$857K |
|
3348
PUT
Calix
CALX
$2.32B
| $666K | ﹤0.01% |
18,800
+12,300
| +189% | +$396K |
|
|
TIGR
3349
CALL
UP Fintech Holding
TIGR
$877M
| $666K | ﹤0.01% |
158,600
-11,500
| -7% | -$45.4K |
|
3350
PUT
Fluence Energy
FLNC
$1.79B
| $665K | ﹤0.01% |
38,400
-30,800
| -45% | -$591K |
|
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.