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 |
Alphabet (Google) Class C
GOOG
|
+$54.6M |
| 2 |
Apple
AAPL
|
+$29.1M |
| 3 |
Meta Platforms (Facebook)
META
|
+$15.7M |
| 4 |
IBM
IBM
|
+$13.8M |
| 5 |
Baidu
BIDU
|
+$10.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$10.1M |
| 2 |
McDonald's
MCD
|
+$8.46M |
| 3 |
Ralph Lauren
RL
|
+$5.36M |
| 4 |
Intel
INTC
|
+$5.04M |
| 5 |
WBA
Walgreens Boots Alliance
WBA
|
+$4.76M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 14.27% |
| 2 | Technology | 10.3% |
| 3 | Healthcare | 7.76% |
| 4 | Consumer Discretionary | 6.32% |
| 5 | Financials | 5.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
301
ProShares UltraPro S&P 500
UPRO
$5.29B
| $713K | 0.06% |
64,464
+17,448
| +37% | +$204K |
|
302
Cisco
CSCO
$443B
| $712K | 0.06% |
25,931
+15,049
| +138% | +$432K |
|
|
ICPT
303
PUT
DELISTED
Intercept Pharmaceuticals, Inc.
ICPT
| $712K | 0.06% |
117
-34
| -23% | -$9.05K |
|
304
CALL
American Airlines Group
AAL
$9.73B
| $709K | 0.06% |
2,862
-1,249
| -30% | -$57K |
|
|
BWLD
305
DELISTED
Buffalo Wild Wings, Inc.
BWLD
| $709K | 0.06% |
+4,528
| New | +$741K |
|
|
BHI
306
DELISTED
Baker Hughes
BHI
| $709K | 0.06% |
11,497
+4,793
| +71% | +$314K |
|
307
Amplify Cybersecurity ETF
HACK
$2.65B
| $707K | 0.06% |
22,416
+12,751
| +132% | +$389K |
|
308
Helmerich & Payne
HP
$3.5B
| $703K | 0.06% |
+9,986
| New | +$738K |
|
309
Becton Dickinson
BDX
$42.2B
| $701K | 0.06% |
5,073
+3,604
| +245% | +$498K |
|
310
Skyworks Solutions
SWKS
$9.49B
| $695K | 0.06% |
6,685
-31,469
| -82% | -$3.19M |
|
311
PUT
Williams Companies
WMB
$91B
| $690K | 0.06% |
3,243
+2,330
| +255% | +$120K |
|
312
PUT
Chevron
CVX
$384B
| $689K | 0.06% |
1,187
-646
| -35% | -$67.8K |
|
|
WW
313
PUT
DELISTED
WW International
WW
| $689K | 0.06% |
536
+31
| +6% | +$206 |
|
|
FIG
314
DELISTED
Fortress Investment Group Llc
FIG
| $687K | 0.06% |
94,136
-3,415
| -4% | -$27.4K |
|
|
APC
315
PUT
DELISTED
Anadarko Petroleum
APC
| $686K | 0.06% |
785
-212
| -21% | -$18.4K |
|
316
Abercrombie & Fitch
ANF
$4.24B
| $681K | 0.06% |
31,692
+6,952
| +28% | +$153K |
|
317
Vipshop
VIPS
$7.04B
| $678K | 0.06% |
30,489
-25,038
| -45% | -$664K |
|
318
PUT
State Street Materials Select Sector SPDR ETF
XLB
$8.43B
| $677K | 0.06% |
6,780
-1,778
| -21% | -$44.7K |
|
|
319
CALL
State Street Materials Select Sector SPDR ETF
XLB
$8.43B
| $673K | 0.06% |
8,736
+384
| +5% | +$9.65K |
|
|
JOYY
320
JOYY Inc
JOYY
$3.64B
| $670K | 0.06% |
+9,640
| New | +$643K |
|
321
PNC Financial Services
PNC
$101B
| $669K | 0.06% |
6,998
-4,107
| -37% | -$388K |
|
|
QIHU
322
PUT
DELISTED
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
| $667K | 0.06% |
1,200
+750
| +167% | +$45.3K |
|
323
PUT
American Express
AXP
$238B
| $666K | 0.06% |
2,060
+557
| +37% | +$44.2K |
|
324
PUT
Salesforce
CRM
$134B
| $660K | 0.06% |
1,890
+1,711
| +956% | +$122K |
|
|
ESV
325
PUT
DELISTED
Ensco Rowan plc
ESV
| $658K | 0.06% |
91
-21
| -19% | -$2.04K |
|
Similar funds
Simplex Trading's Q2 2015 Portfolio in Review
As of Q2 2015, Simplex Trading held 6,639 positions worth $1.19B, up 39% from $860M the previous quarter. Its ten largest holdings account for 20% of the portfolio.
Simplex Trading deployed $279M of net new capital in Q2 2015, opening 1,607 new positions and adding to 1,829 existing holdings. Its largest new stake was IBM: 85,948 shares worth $13.4M.
By sector, the portfolio is most concentrated in Communication Services at 14% of assets, up from 7.8% a quarter earlier, followed by Technology and Healthcare.
On the sell side, the largest reduction was Intel, an estimated $5.04M trimmed.
- Simplex Trading's largest Q2 2015 buy was IBM: 85,948 shares worth $13.4M.
- Simplex Trading added most to Alphabet (Google) Class C in Q2 2015, an estimated $54.6M increase.
- Simplex Trading's biggest Q2 2015 reduction was Intel, cutting an estimated $5.04M.
- Simplex Trading fully exited State Street SPDR S&P 500 ETF Trust in Q2 2015, selling an estimated $10.1M.
- Simplex Trading's ten largest holdings make up 20% of its $1.19B portfolio in Q2 2015.
- Simplex Trading opened 1,607 new positions and closed 1,438 in Q2 2015.
- Simplex Trading's portfolio value rose 39% quarter-over-quarter to $1.19B.
Based on Simplex Trading's 13F filing for Q2 2015, filed 8 Jul 2015.