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
|
+$286M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$82.3M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$72.6M |
| 4 |
Alphabet (Google) Class C
GOOG
|
+$64.2M |
| 5 |
Intel
INTC
|
+$52.9M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$51.5M |
| 2 |
iShares Silver Trust
SLV
|
+$41.8M |
| 3 |
Ford
F
|
+$26.3M |
| 4 |
United Airlines
UAL
|
+$22.7M |
| 5 |
ExxonMobil
XOM
|
+$22.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.84% |
| 2 | Communication Services | 0.32% |
| 3 | Consumer Discretionary | 0.32% |
| 4 | Financials | 0.28% |
| 5 | Healthcare | 0.2% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
301
CALL
Pinduoduo
PDD
$118B
| $39.3M | 0.04% |
636,200
-13,400
| -2% | -$628K |
|
302
PUT
Devon Energy
DVN
$52.5B
| $39.2M | 0.04% |
711,400
-24,500
| -3% | -$1.6M |
|
303
PUT
Thermo Fisher Scientific
TMO
$213B
| $39M | 0.04% |
71,800
-13,300
| -16% | -$7.32M |
|
304
PUT
Amgen
AMGN
$199B
| $38.9M | 0.04% |
159,900
+51,200
| +47% | +$12.5M |
|
305
PUT
CVS Health
CVS
$136B
| $38.7M | 0.04% |
418,000
-276,700
| -40% | -$27M |
|
306
PUT
Palantir
PLTR
$293B
| $38.7M | 0.04% |
4,268,900
-3,020,800
| -41% | -$29.9M |
|
|
SPLK
307
PUT
DELISTED
Splunk Inc
SPLK
| $38.5M | 0.04% |
435,100
+146,600
| +51% | +$16.1M |
|
308
PUT
lululemon athletica
LULU
$12.6B
| $38.3M | 0.04% |
140,600
-1,700
| -1% | -$545K |
|
309
PUT
Lam Research
LRCX
$397B
| $38.3M | 0.04% |
899,000
-322,000
| -26% | -$15.3M |
|
310
PUT
SLB Ltd
SLB
$70.7B
| $38.3M | 0.04% |
1,071,000
-43,800
| -4% | -$1.83M |
|
311
PUT
Alcoa
AA
$11.9B
| $38.2M | 0.04% |
838,500
+95,800
| +13% | +$6.21M |
|
312
PUT
Halliburton
HAL
$27.4B
| $38M | 0.04% |
1,212,800
+781,500
| +181% | +$29.1M |
|
313
PUT
Upstart Holdings
UPST
$2.61B
| $38M | 0.04% |
1,202,800
+217,800
| +22% | +$13M |
|
314
Tesla
TSLA
$1.21T
| $37.5M | 0.04% |
+167,280
| New | +$45.7M |
|
315
PUT
Snap
SNAP
$7.42B
| $37.5M | 0.04% |
2,857,500
+91,000
| +3% | +$2.08M |
|
316
PUT
Lucid Motors
LCID
$2.49B
| $37.2M | 0.04% |
216,790
+14,780
| +7% | +$2.81M |
|
|
ATVI
317
PUT
DELISTED
Activision Blizzard
ATVI
| $37.2M | 0.04% |
477,700
-47,300
| -9% | -$3.68M |
|
318
CALL
Honeywell
HON
$77.3B
| $37.1M | 0.04% |
226,205
+124,243
| +122% | +$22.3M |
|
319
CALL
Applied Materials
AMAT
$441B
| $37M | 0.04% |
406,600
-50,900
| -11% | -$5.58M |
|
320
PUT
Marvell Technology
MRVL
$185B
| $37M | 0.04% |
849,700
+62,300
| +8% | +$3.53M |
|
321
CALL
Invesco DB US Dollar Index Bullish Fund
UUP
$434M
| $37M | 0.04% |
1,447,300
+760,000
| +111% | +$20.8M |
|
322
PayPal
PYPL
$49.2B
| $36.6M | 0.04% |
524,532
+373,373
| +247% | +$32.4M |
|
|
ZEN
323
CALL
DELISTED
ZENDESK INC
ZEN
| $36.5M | 0.04% |
492,400
+184,300
| +60% | +$18.2M |
|
324
PUT
Valero Energy
VLO
$91.5B
| $36.3M | 0.04% |
341,300
+205,900
| +152% | +$24.4M |
|
|
MRO
325
CALL
DELISTED
Marathon Oil Corporation
MRO
| $36.2M | 0.04% |
1,609,500
+170,500
| +12% | +$4.56M |
|
Similar funds
Simplex Trading's Q2 2022 Portfolio in Review
As of Q2 2022, Simplex Trading held 11,810 positions worth $94.1B, down 14% from $109B the previous quarter. Its ten largest holdings account for 40% of the portfolio.
Simplex Trading deployed $11.3B of net new capital in Q2 2022, opening 1,405 new positions and adding to 4,027 existing holdings. Its largest new stake was Alphabet (Google) Class C: 543,540 shares worth $59.4M.
By sector, the portfolio is most concentrated in Technology at 0.84% of assets, up from 0.67% a quarter earlier, followed by Communication Services and Consumer Discretionary.
On the sell side, the largest reduction was United Airlines, an estimated $22.7M trimmed.
- Simplex Trading's largest Q2 2022 buy was Alphabet (Google) Class C: 543,540 shares worth $59.4M.
- Simplex Trading added most to Apple in Q2 2022, an estimated $286M increase.
- Simplex Trading's biggest Q2 2022 reduction was United Airlines, cutting an estimated $22.7M.
- Simplex Trading fully exited State Street SPDR S&P 500 ETF Trust in Q2 2022, selling an estimated $51.5M.
- Simplex Trading's ten largest holdings make up 40% of its $94.1B portfolio in Q2 2022.
- Simplex Trading opened 1,405 new positions and closed 1,792 in Q2 2022.
- Simplex Trading's portfolio value fell 14% quarter-over-quarter to $94.1B.
Based on Simplex Trading's 13F filing for Q2 2022, filed 3 Aug 2022.