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 | |
|---|---|---|---|---|---|---|
501
Teradata
TDC
$2.64B
| $361K | 0.03% |
9,757
+1,812
| +23% | +$74.6K |
|
502
Target
TGT
$62.6B
| $361K | 0.03% |
+4,423
| New | +$358K |
|
|
CAVM
503
PUT
DELISTED
Cavium, Inc.
CAVM
| $361K | 0.03% |
543
+535
| +6,688% | +$37.5K |
|
504
PUT
3M
MMM
$89.1B
| $360K | 0.03% |
843
-489
| -37% | -$65.6K |
|
505
Packaging Corp of America
PKG
$20.3B
| $360K | 0.03% |
5,770
+1,367
| +31% | +$96.2K |
|
|
RDS.A
506
DELISTED
Royal Dutch Shell PLC ADS Class A
RDS.A
| $359K | 0.03% |
+6,300
| New | +$383K |
|
507
Southern Company
SO
$108B
| $358K | 0.03% |
8,557
+3,026
| +55% | +$132K |
|
|
NE
508
DELISTED
Noble Corporation
NE
| $358K | 0.03% |
23,265
+19,279
| +484% | +$318K |
|
509
Post Holdings
POST
$4.12B
| $357K | 0.03% |
+10,118
| New | +$312K |
|
|
ZLTQ
510
DELISTED
ZELTIQ Aesthetics, Inc.
ZLTQ
| $357K | 0.03% |
12,145
+11,101
| +1,063% | +$335K |
|
511
CALL
Nike
NKE
$62.6B
| $356K | 0.03% |
1,770
+112
| +7% | +$5.74K |
|
512
CALL
Sony
SONY
$123B
| $356K | 0.03% |
3,280
+2,290
| +231% | +$14K |
|
513
CALL
EOG Resources
EOG
$76.7B
| $355K | 0.03% |
1,447
+517
| +56% | +$47.8K |
|
514
PUT
UnitedHealth
UNH
$392B
| $353K | 0.03% |
1,163
+281
| +32% | +$33.2K |
|
|
KRFT
515
CALL
DELISTED
KRAFT FOODS GROUP INC COM STK (VA)
KRFT
| $352K | 0.03% |
618
-1,744
| -74% | -$150K |
|
|
RTI
516
DELISTED
RTI INTL METALS INC(HLDG CO)
RTI
| $352K | 0.03% |
11,193
+2,917
| +35% | +$106K |
|
517
F5
FFIV
$22.6B
| $350K | 0.03% |
+2,915
| New | +$358K |
|
|
518
CALL
McDonald's
MCD
$187B
| $350K | 0.03% |
1,216
-524
| -30% | -$50.7K |
|
|
BITA
519
DELISTED
Bitauto Holdings Limited
BITA
| $350K | 0.03% |
6,865
-1,685
| -20% | -$99K |
|
520
PUT
ProShares Ultra S&P500
SSO
$8.02B
| $348K | 0.03% |
10,664
-3,416
| -24% | -$28.6K |
|
|
WFM
521
PUT
DELISTED
Whole Foods Market Inc
WFM
| $346K | 0.03% |
369
+22
| +6% | +$984 |
|
522
PUT
Herbalife
HLF
$1.26B
| $344K | 0.03% |
3,074
-298
| -9% | -$7.21K |
|
|
BBBY
523
DELISTED
Bed Bath & Beyond Inc
BBBY
| $344K | 0.03% |
+5,000
| New | +$358K |
|
524
PUT
Delta Air Lines
DAL
$54.9B
| $341K | 0.03% |
916
+546
| +148% | +$23.9K |
|
|
CMGE
525
DELISTED
CHINA MOBILE GAMES & ENTMT GRP LTD SPON ADR (CYM)
CMGE
| $338K | 0.03% |
+16,016
| New | +$327K |
|
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.